\nBlock that is applied for multizone VAV AHU control. It outputs the supply fan status\nand the operation speed, outdoor and return air damper position, supply air\ntemperature setpoint and the valve position of the cooling and heating coils.\nIt is implemented according to the Section 5.16 of ASHRAE Guideline 36, May 2020.\n
\n\nThe fan speed control is implemented according to Section 5.16.1. It outputs\nthe boolean signal y1SupFan to turn on or off the supply fan.\nIn addition, based on the pressure reset request uZonPreResReq\nfrom the VAV zones controller, the\nsequence resets the duct pressure setpoint, and uses this setpoint\nto modulate the fan speed ySupFanSpe using a PI controller.\nSee\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan\nfor more detailed description.\n
\n\nBased on the Section 5.16.2, the sequence first sets the maximum supply air temperature\nbased on reset requests collected from each zone uZonTemResReq. The\noutdoor temperature TOut and operation mode uOpeMod are used\nalong with the maximum supply air temperature, for computing the supply air temperature\nsetpoint. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature\nfor more detailed description.\n
\n\nBy selecting different building pressure control designs, which includes using actuated\nrelief damper without fan, using actuated relief dampers with relief fan, using\nreturn fan with direct building pressure control, or using return fan with airflow\ntracking control, the sequences controls relief fans, relief dampers and return fans.\nSee belows sequences for more detailed description:\n
\n\nAccording to the Section 5.16.16, the sequence send out heating or cooling plant requests\nif the supply air temperature is below or above threshold value, or the heating or\ncooling valves have been widely open for certain times. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests\nfor more detailed description.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nEnumeration to define the energy standard. Possible values are:\n
\n\nEnumeration to define the ventilation standard. Possible values are:\n
\n\nEnumeration of different ASHRAE climate zones. Possible values are:\n
\n\nEnumeration of different Title 24 climate zones. Possible values are:\n
\n\nEnumeration to define freeze stat options. Possible values are:\n
\n\nEnumeration to define how minimum outdoor air and economizer function being\ndesigned in multizone AHU. Possible values are:\n
\n\nEnumeration of define types of building pressure control system.\nPossible values are:\n
\n\nEnumeration to define economizer divice type for enable and disable it. Possible values are:\n
\n\nEnumeration to define cooling coil options. Possible values are:\n
\n\nEnumeration to define heating coil options. Possible values are:\n
\n\nBlock that outputs one of two integer input signals based on a boolean input signal.\n
\n\nFreeze protection sequence for multizone AHU system. It is developed based on Section\n5.16.12 of ASHRAE Guideline 36, May 2020.\n
\n\nEnabling hysteresis can avoid frequent switching.\nAdding hysteresis is recommended in real controllers to guard against sensor noise, and\nin simulation to guard against numerical noise. Numerical noise can be present if\nan input depends on a state variable or a quantity that requires an iterative solution, such as\na temperature or a mass flow rate of an HVAC system.\nTo disable hysteresis, set h=0.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nBlock that outputs one of two real input signals based on a boolean input signal.\n
\n\nThe controller anti-windup compensation is as follows:\nInstead of the above basic control law, the implementation is\n
\n\nhas order of magnitude one, and hence the anti-windup compensation should work well.\n
\n\nNote that this controller implements an integrator anti-windup. Therefore,\nfor most applications, the controller output does not need to be reset.\nHowever, if the controller is used in conjuction with equipment that is being\nswitched on, better control performance may be achieved by resetting the controller\noutput when the equipment is switched on. This is in particular the case in situations\nwhere the equipment control input should continuously increase as the equipment is\nswitched on, such as a light dimmer that may slowly increase the luminance, or\na variable speed drive of a motor that should continuously increase the speed. In\nthis case, the controller\n\nBuildings.Controls.OBC.CDL.Reals.PIDWithReset\nthat can reset the output should be used.\n
\n\nThe parameters of the controller can be manually adjusted by performing\nclosed loop tests (= controller + plant connected\ntogether) and using the following strategy:\n
\n\nR. Montgomery and R. McDowall (2008).\n\\\"Fundamentals of HVAC Control Systems.\\\"\nAmerican Society of Heating Refrigerating and Air-Conditioning Engineers Inc. Atlanta, GA.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nEnabling hysteresis can avoid frequent switching.
\nIn simulation, adding hysteresis is recommended to guard against numerical noise.\nOtherwise, numerical noise from a nonlinear solver or from an\nimplicit time integration algorithm may cause the simulation to stall.\nNumerical noise can be present if an input depends\non a state variable or a quantity that requires an iterative solution,\nsuch as a temperature or a mass flow rate of an HVAC system.
\nIn real controllers, adding hysteresis is recommended to guard against measurement noise.\nOtherwise, measurement noise may cause the output to change frequently.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nThis block could for example be used to disable an economizer,\nand not re-enable it for 10 min, and vice versa.\n
\n\nBlock that outputs one of two boolean input signals based on a boolean input signal.\n
\n\nThis sequence outputs the system reset requests for multiple zone air handling unit. The\nimplementation is according to the Section 5.16.16 of ASHRAE Guideline 36, May 2020. \n
\n\nSend the chiller plant that serves the system a chiller plant request as follows:\n
\n\nSend the heating hot-water plant that serves the air handling unit a heating hot-water\nplant request as follows:\n
\n\nMulti zone VAV AHU economizer control sequence that calculates\noutdoor and return air damper positions based on ASHRAE\nGuidline 36, May 2020, Sections: 5.16.2.3,5.16.4, 5.16.5, 5.16.6, 5.16.7.\n
\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and airflow measurement.\nIt is implemented according to Section 5.16.5 of the ASHRAE Guideline 36, May 2020.\n
\n\nMinimum outdoor air control loop is enabled when the supply fan is proven ON\n(u1SupFan=true) and in occupied mode, and disabled and output set to\nzero otherwise\n
\n\nThe minimum outdoor airflow rate shall be maintained at the minimum outdoor air\nset point by a reverse-acting control loop whose output is 0% to 100%.\nFrom 0% to 50% loop output, the minimum outdoor air damper is opened from 0%\n(minOutDamPhy_min) to 100% (minOutDamPhy_max).\n
\n\nThe controller anti-windup compensation is as follows:\nInstead of the above basic control law, the implementation is\n
\n\nhas order of magnitude one, and hence the anti-windup compensation should work well.\n
\n\nThe parameters of the controller can be manually adjusted by performing\nclosed loop tests (= controller + plant connected\ntogether) and using the following strategy:\n
\n\nR. Montgomery and R. McDowall (2008).\n\\\"Fundamentals of HVAC Control Systems.\\\"\nAmerican Society of Heating Refrigerating and Air-Conditioning Engineers Inc. Atlanta, GA.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nEnabling hysteresis can avoid frequent switching.
\nIn simulation, adding hysteresis is recommended to guard against numerical noise.\nOtherwise, numerical noise from a nonlinear solver or from an\nimplicit time integration algorithm may cause the simulation to stall.\nNumerical noise can be present if an input depends\non a state variable or a quantity that requires an iterative solution,\nsuch as a temperature or a mass flow rate of an HVAC system.
\nIn real controllers, adding hysteresis is recommended to guard against measurement noise.\nOtherwise, measurement noise may cause the output to change frequently.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nEnabling hysteresis can avoid frequent switching.
\nIn simulation, adding hysteresis is recommended to guard against numerical noise.\nOtherwise, numerical noise from a nonlinear solver or from an\nimplicit time integration algorithm may cause the simulation to stall.\nNumerical noise can be present if an input depends\non a state variable or a quantity that requires an iterative solution,\nsuch as a temperature or a mass flow rate of an HVAC system.
\nIn real controllers, adding hysteresis is recommended to guard against measurement noise.\nOtherwise, measurement noise may cause the output to change frequently.\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and differential pressure control.\nIt is implemented according to Section 5.16.4 of the ASHRAE Guideline 36, May 2020.\n
\n\nOpen minimum outdoor air damper when the supply air fan is proven ON and the system\nis in occupied mode and the minimum differential pressure set point is greater\nthan zero. Damper shall be closed otherwise.\n
\n\nThis block models the multi zone VAV AHU minimum outdoor air control with a single\ncommon damper for minimum outdoor air and economizer functions based on outdoor airflow\nmeasurement, designed in line with the Section 5.16.6 of the ASHRAE Guideline 36, May 2020.\n
\n\nThe controller sets the outdoor and return damper position limits so\nthat the outdoor airflow rate VOut_flow stays equal or above the\nminimum outdoor air setpoint VOutMinSet_flow. The fraction of the controller\noutput signal between yMin and uRetDam_min is\nlinearly mapped to the outdoor air damper minimal position yOutDam_min\nwhile the fraction of the controller output between uRetDam_min and\nyMax is linearly mapped to the return air damper maximum position\nyRetDam_max. Thus the dampers are not interlocked.\n
\n\nThe following control charts show the input/output structure and an expected damper position\nlimits for a well configured controller.\n
\n\nThe expected damper position limits vs. the control loop signal are as follows:\n
\n\nThis is a multi zone VAV AHU economizer enable/disable sequence\nbased on the Section 5.16.7 of the ASHRAE Guideline 36, May 2020. Additional\nconditions included in the sequence are: freeze protection (freeze protection\nstage 0-3, see Section 5.16.12), supply fan status (on or off, see Section 5.16.5).\n
\n\nThe economizer is disabled whenever the outdoor air conditions\nexceed the economizer high limit setpoint.\nThis sequence allows for all device types listed in\nASHRAE 90.1-2013 and Title 24-2013.\n
\n\nIn addition, the economizer gets disabled without a delay whenever any of the\nfollowing is true:\n
\n\nThe following state machine chart illustrates the transitions between enabling and disabling:\n
\n\nAfter the disable signal is activated, the following procedure is applied, in order to\nprevent pressure fluctuations in the HVAC system:\n
\nuHigh, switch to y=true"}}]}},{"component_clause":{"type_prefix":"parameter","type_specifier":"Boolean","component_list":[{"declaration":{"identifier":"pre_y_start","modification":{"equal":true,"expression":{"simple_expression":"false"}}},"description":{"description_string":"Value of pre(y) at initial time"}}]}},{"component_clause":{"type_specifier":"Buildings.Controls.OBC.CDL.Interfaces.RealInput","component_list":[{"declaration":{"identifier":"u"},"description":{"description_string":"Real input signal","annotation":[{"element_modification_or_replaceable":{"element_modification":{"Placement":{"transformation":{"extent":[{"x":-140,"y":-20},{"x":-100,"y":20}]}}}}}]}}]}},{"component_clause":{"type_specifier":"Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput","component_list":[{"declaration":{"identifier":"y"},"description":{"description_string":"Boolean output 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that transforms a Real input signal into a Boolean\noutput signal:\n
\n\n- When the output was
false and the input becomes\n greater than the parameter uHigh, the output\n switches to true.\n \n- When the output was
true and the input becomes\n less than the parameter uLow, the output\n switches to false.\n \n
\n\nThe start value of the output is defined via parameter\npre_y_start (= value of pre(y) at initial time).\nThe default value of this parameter is false.\n
\n\n![\\\"Hysteresis.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Reals/Hysteresis.png\\\"\n)
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\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\n- \nOctober 3, 2017, by Michael Wetter:
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\nFirst implementation, based on the implementation of the\nModelica Standard Library.\n \n
\n\""}}}}}]}}}}]}}}}],"modelicaFile":"Buildings/Controls/OBC/CDL/Reals/Hysteresis.mo","fullMoFilePath":"/home/reituag/gitrepo/modelica-buildings/Buildings/Controls/OBC/CDL/Reals/Hysteresis.mo","checksum":"4ab7962b6a6a3c0d3905c8cdcfaa93ca"},{"within":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations","class_definition":[{"class_prefixes":"block","class_specifier":{"long_class_specifier":{"identifier":"ReturnFan","description_string":"Modulates dampers of economizer in buildings using return fan to control the pressure","composition":{"element_list":[{"component_clause":{"type_prefix":"parameter","type_specifier":"Boolean","component_list":[{"declaration":{"identifier":"have_dirCon","modification":{"equal":true,"expression":{"simple_expression":"true"}}},"description":{"description_string":"True: the building have direct pressure 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\n\n| 7 | outdoor air temperature is higher than 21 °C (TCut=21°C) | \n
\n\n| Differential dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than the return air temperature (TCut=TRet) | \n
\n\n| 2, 4, 10 | outdoor air temperature is higher than the return air temperature minus 1 °C (TCut=TRet-1°C) | \n
\n\n| 6, 8, 9 | outdoor air temperature is higher than the return air temperature minus 2 °C (TCut=TRet-2°C) | \n
\n\n| 7 | outdoor air temperature is higher than the return air temperature minus 3 °C (TCut=TRet-3°C) | \n
\n\n| Fixed enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) | \n
\n\n| Fixed dry bulb with differential dry bulb | 1, 3, 5, 11 to 16 | \noutdoor air temperature is higher than 24 °C or the return air temperature (TCut=24°C or TCut=TRet) | \n
\n\n| 2, 4, 10 | \noutdoor air temperature is higher than 23 °C or the return air temperature minus 1 °C (TCut=min(23°C, TRet-1°C)) | \n
\n\n| 6, 8, 9 | \noutdoor air temperature is higher than 22 °C or the return air temperature minus 2 °C (TCut=min(22°C, TRet-2°C)) | \n
\n\n| 7 | \noutdoor air temperature is higher than 21 °C or the return air temperature minus 3 °C (TCut=min(21°C, TRet-3°C)) | \n
\n
\n
\n\nNote that the device type Fixed dry bulb with differential dry bulb is not listed in either ASHRAE 90.1 or Title 24 standard.\nBut it is possible to use in practice. See Section 3.1.6.2 in Guideline 36.\n
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\n\nFor each upstream system or plant set point being controlled by a trim and respond\nloop, define the initial values in system or plant sequences. Values for trim,\nrespond, time step, etc. shall be tuned to provide stable control.\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | numOfReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n\nThe trim and respond logic shall reset setpoint within the range minSet to\nmaxSet.\nWhen the associated device is off (uDevSta=false), the setpoint\nshall be iniSet.\nThe reset logic shall be active while the associated device is proven\non (uDevSta=true), starting delTim after initial\ndevice start command.\nWhen active, every time step samplePeriod, trim the setpoint by\ntriAmo.\nIf there are more than numIgnReq requests, respond by changing\nthe setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of\nrequests minus the number of ignored requests, but no more than maxRes.\n
\n\nIn other words, every time step samplePeriod:\n
\n\n- Change setpoint by
triAmo; \n- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq\n-numIgnReq) but no more than maxRes.\n \n
\nHold and release loop output
\n\nOptionally, if the parameter have_hol is set to true, an additional\ninput signal uHol allows for holding the trim and respond loop output\nat a fixed value for the longer of the time the input uHol remains true \nand the duration specified by the parameter dtHol.\nWhen uHol switches back to false, the hold is released and resetting\ncontinues from the previously held value (without reinitializing to iniSet\nor going through a delay time of delTim). \n
\n\nThis is typically used in control sequences to freeze the reset logic during the plant\nstaging process.\nConsider for example the following specification:
\n\\\"When a plant stage change is initiated, the reset logic shall be disabled and value\nfixed at its last value for the longer of 15 minutes and the time it takes \nfor the plant to successfully stage.\\\"
\nUsing this block with have_hol=true and dtHol=15*60 \nyields the following sequence of events.\n
\n\n- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
\n- 0:12 - Stage change is completed. T&R loop output remains at 50 % \nsince < 15 minutes have elapsed.
\n- 0:15 - T&R is released and continues resetting from 50 %.
\n
\nExamples
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\ncomparing scenarios with and without holding the loop output.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a positive trim amount.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\nin a scenario where the equipment switches on and off.\n
\n\n![\\\"Trend]()
\n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\n- \nJune 6, 2024, by Antoine Gautier:
\nAdded logic to hold trim and respond loop output.\nThis is for #3761.\n \n- \nJune 3, 2020, by Jianjun Hu:
\nUpgraded according to G36 official release.\n \n- \nApril 13, 2020, by Jianjun Hu:
\nCorrected to delay the true initial device status.\nThis is for #1876.\n \n- \nAugust 28, 2019, by Jianjun Hu:
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that outputs the supply air temperature setpoint and the coil valve control\ninputs for VAV system with multiple zones, implemented according to Section 5.16.2 of\nthe ASHRAE Guideline G36, May 2020.\n
\n\nThe control loop is enabled when the supply air fan u1SupFan is proven on,\nand disabled and the output set to deadband (no heating, minimum economizer) otherwise.\n
\n The supply air temperature setpoint is computed as follows.
\n\nSetpoints for TSupCoo_min, TSupCoo_max,\nTOut_min, TOut_max\n
\n\nPer Section 3.1.4.1, the setpoints are design information.\n
\n\n- \nThe
TSupCoo_min should be set no lower than the design coil leaving air\ntemperature to prevent excessive chilled water temperature reset requests.\n \n- \nThe
TSupCoo_max is typically 18 °C (65 °F) in mild and dry climates\nand 16 °C (60 °F) or lower in humid climates. It should not typically be\ngreater than 18 °C (65 °F).\n \n- \nThe default range of outdoor air temperature (
TOut_min=16°C,\nTOut_max=21°C) used to reset the occupied mode TSupSet\nwas chosen to maximize economizer hours. It may be preferable to use a lower\nrange of outdoor air temperature (e.g. TOut_min=13°C,\nTOut_max=18°C) to minimize fan energy.\n \n
\n\nDuring occupied and Setup modes (uOpeMod=1, uOpeMod=2)
\n\nThe TSupSet shall be reset from TSupCoo_min when the outdoor\nair temperature is TOut_max and above, proportionally up to\nmaximum supply temperature when the outdoor air temperature is TOut_min and\nbelow. The maximum supply temperature shall be reset using trim and respond logic between\nTSupCoo_min and TSupCoo_max. Parameters suggested for the\ntrim and respond logic are shown in the table below. They require adjustment\nduring the commissioning and tuning phase.\n
\n\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | TSupCoo_min | Minimum setpoint |
\n| SPmax | TSupCoo_max | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | uZonTemResReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n
\n\n\n![\\\"Image]()
\n
\n\nDuring Cool-down modes (uOpeMod=3)
\n\nSupply air temperature setpoint TSupSet shall be TSupCoo_min.\n
\nDuring Setback and Warmup modes (uOpeMod=4, uOpeMod=5)
\n\nSupply air temperature setpoint TSupSet shall be TSupWarUpSetBac.\n
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for controling relief fan that is part of AHU. It is developed based on\nSection 5.16.9 of ASHRAE Guideline 36, May 2020, with the modification to accommodate\nthe single relief fan control.\n
\n\n- \nThe relief fan shall be enabled when the AHU supply fan is proven ON\n(
u1SupFan=true), and shall be disabled otherwise.\n \n- \nBuilding static pressure (
dpBui) shall be time averaged with a sliding\n5-minute window and 15 second sampling rate (to dampen fluctuations). The average\nvalue shall be that displayed and used for control.\n \n- \nA P-only control loop maintains the building pressure at a set point (
dpBuiSet)\nof 12 Pa (0.05 in. of water) with an output ranging from 0% to 100%. The loop is disabled\nand output set to zero when the relief fan is disabled.\n \n- \nFan speed shall be equal to the PID signal but no less than the minimum speed.\n
\n- \nWhen relief system is enabled, and the control loop\noutput is above 5%, open the motorized dampers to the relief fans;\nclose the dampers when the loop output drops to 0% for 5 minutes.\n
\n- \nWhen the control loop output is above minimum speed (
relFanSpe_min) plus 15%\nby 7 minutes, start the relief fan.\n \n- \nWhen the control loop output is below minimum speed (
relFanSpe_min)\nby 5 minutes, shut off the relief fan.\n \n
\n \n
\n\""}}}}},{"element_modification_or_replaceable":{"element_modification":{"name":"revisions","modification":{"equal":true,"expression":{"simple_expression":"\"\n\n- \nMarch 5, 2024, by Michael Wetter:
\nCorrected wrong use of displayUnit.\n \n- \nSeptember 18, 2023, by Jianjun Hu:
\nChanged damper position output from the real to boolean.
\nThis is for\nissue 3526.\n \n- \nSeptember 20, 2022, by Jianjun Hu:
\nFirst implementation.\n \n
\n\""}}}}}]}}}}]}}}}],"modelicaFile":"Buildings/Controls/OBC/ASHRAE/G36/AHUs/MultiZone/VAV/SetPoints/ReliefFan.mo","fullMoFilePath":"/home/reituag/gitrepo/modelica-buildings/Buildings/Controls/OBC/ASHRAE/G36/AHUs/MultiZone/VAV/SetPoints/ReliefFan.mo","checksum":"857355f7ceb77b368291ef5bd8944ec2"}]
\ No newline at end of file
diff --git a/test/expressionEvaluation/MultiZoneVavDoc.html b/test/expressionEvaluation/MultiZoneVavDoc.html
new file mode 100644
index 00000000..8df370a7
--- /dev/null
+++ b/test/expressionEvaluation/MultiZoneVavDoc.html
@@ -0,0 +1,1246 @@
+MultiZoneVavDoc1. Freeze protection sequence for multizone air handling unit
+
+Freeze protection sequence for multizone AHU system. It is developed based on Section
+5.16.12 of ASHRAE Guideline 36, May 2020.
+
+
+-
+If the supply air temperature
TAirSup drops below 4.4 °C (40 °F)
+for 5 minutes, send two (or more, as required to ensure that heating plant is active,
+minHotWatReq (2, adjustable)) heating hot-water plant requests, override the outdoor
+air damper to the minimum position, and modulate the heating coil to maintain a suppy
+air temperature of at least 6 °C (42 °F).
+Disable this function when supply air temperature rises above 7 °C (45 °F) for
+5 minutes.
+
+-
+If the supply air temperature
TAirSup drops below 3.3 °C (38 °F)
+for 5 minutes, fully close both the economizer damper and the minimum outdoor air
+damper for 1 hour and set a Level 3 alarm noting that minimum ventilation was
+interrupted. After 1 hour, the unit shall resume minimum outdoor air ventilation
+and enter the previous stage of freeze protection.
+
+-
+If it is warm enough that the supply air temperature rises above 7 °C (45 °F)
+with minimum ventilation, the unit will remain in Stage 1 freeze protection for 5
+minutes then resume normal operation.
+
+
+
+-
+Upon signal from the freeze-stat (if installed),
+or if supply air temperature drops below 3.3 °C (38 °F) for 15 minutes or
+below 1 °C (34 °F) for 5 minutes, shut down supply and return (or relief)
+fan(s), close outdoor air damper, open the cooling-coil valve to 100%, and energize
+the CHW pump system. Also send two (or more, as required to ensure that heating plant
+is active,
minHotWatReq (2, adjustable)) heating hot-water plant requests,
+modulate the heating coil to maintain the higher of the supply air temperature or
+the mixed air temperature at 27 °C (80 °F), and set a Level 2 alarm indicating
+the unit is shut down by freeze protection.
+
+-
+If a freeze-protection shutdown is triggered by a low air temperature sensor reading,
+it shall remain in effect until it is reset by a software switch from the operator's
+workstation. (If a freeze-stat with a physical reset switch is used instead, there
+shall be no software reset switch.)
+
+
+
+
+2. Output plant requests for multizone air handling unit
+
+This sequence outputs the system reset requests for multiple zone air handling unit. The
+implementation is according to the Section 5.16.16 of ASHRAE Guideline 36, May 2020.
+
+2.1. Chilled water reset request yChiWatResReq
+
+
+-
+If the supply air temperature
TAirSup exceeds the supply air temperature
+set point TAirSupSet by 3 °C (5 °F) for 2 minutes, send 3 requests.
+
+-
+If the supply air temperature
TAirSup exceeds the supply air temperature
+set point TAirSupSet by 2 °C (3 °F) for 2 minutes, send 2 requests.
+
+-
+Else if the chilled water valve position
uCooCoiSet is greater than
+95%, send 1 request until the uCooCoiSet is less than 85%.
+
+-
+Else if the chilled water valve position
uCooCoiSet is less than 95%,
+send 0 request.
+
+
+2.2. Chiller plant request yChiPlaReq
+
+
+Send the chiller plant that serves the system a chiller plant request as follows:
+
+
+-
+If the chilled water valve position
uCooCoiSet is greater than
+95%, send 1 request until the uCooCoiSet is less than 10%.
+
+-
+Else if the chilled water valve position
uCooCoiSet is less than 95%,
+send 0 request.
+
+
+2.3. If there is a hot-water coil, hot-water
+reset requests yHotWatResReq
+
+
+-
+If the supply air temperature
TAirSup is 17 °C (30 °F) less than
+the supply air temperature set point TAirSupSet for 5 minutes, send 3
+requests.
+
+-
+Else if the supply air temperature
TAirSup is 8 °C (15 °F) less than
+the supply air temperature set point TAirSupSet for 5 minutes, send 2
+requests.
+
+-
+Else if the hot water valve position
uHeaCoiSet is greater than
+95%, send 1 request until the uHeaCoiSet is less than 85%.
+
+-
+Else if the hot water valve position
uHeaCoiSet is less than 95%,
+send 0 request.
+
+
+2.4. If there is a hot-water coil and heating hot-water plant, heating hot-water
+plant reqeusts yHotWatPlaReq
+
+
+Send the heating hot-water plant that serves the air handling unit a heating hot-water
+plant request as follows:
+
+
+-
+If the hot water valve position
uHeaCoiSet is greater than 95%, send 1
+request until the hot water valve position is less than 10%.
+
+-
+If the hot water valve position
uHeaCoiSet is less than 95%, send 0 requests.
+
+
+3. Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and airflow measurement
+
+Block that outputs the position limits of the return and outdoor air damper for units
+with a separated minimum outdoor air damper and airflow measurement.
+It is implemented according to Section 5.16.5 of the ASHRAE Guideline 36, May 2020.
+
+3.1. Minimum outdoor air set point
+
+
+Calculate the outdoor air set point with
+
+Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.
+
+3.2. Minimum outdoor air control loop
+
+
+Minimum outdoor air control loop is enabled when the supply fan is proven ON
+(u1SupFan=true) and in occupied mode, and disabled and output set to
+zero otherwise
+
+
+The minimum outdoor airflow rate shall be maintained at the minimum outdoor air
+set point by a reverse-acting control loop whose output is 0% to 100%.
+From 0% to 50% loop output, the minimum outdoor air damper is opened from 0%
+(minOutDamPhy_min (0, adjustable)) to 100% (minOutDamPhy_max (1, adjustable)).
+
+3.3. Return air damper
+
+
+-
+Return air damper minimum outdoor air control is enabled when the minimum outdoor
+air damper is fully open and the economizer outdoor air damper is less than a projected
+position limit, which is 5% when supply fan speed is at 100% design speed proportionally
+up to 80% when the fan is at minimum speed.
+
+-
+Return air damper minimum outdoor air control is disabled when the minimum outdoor
+air damper is not fully open or the economizer outdoor air damper is 10% above the projected
+position limit as determined above.
+
+-
+When enabled, the maximum return air damper set point is reduced from 100%
+(
retDamPhy_max (1, adjustable)) to 0% (retDamPhy_min (0, adjustable))
+as the minimum outdoor air loop output rises from 50% to 100%.
+
+
+4. Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and differential pressure control
+
+Block that outputs the position limits of the return and outdoor air damper for units
+with a separated minimum outdoor air damper and differential pressure control.
+It is implemented according to Section 5.16.4 of the ASHRAE Guideline 36, May 2020.
+
+4.1. Differential pressure setpoint across the minimum outdoor air damper
+
+
+-
+Per Section 3.2.1, designer should provide the design minimum pressure difference across
+the minimum outdoor air damper,
dpDesMinOutDam (20 Pa, adjustable). The absolute minimum
+pressure difference (dpAbsMinOutDam (5 Pa, adjustable)) should also be provided if complying
+with California Title 24 requirements.
+
+-
+Calculate the outdoor air set point with
+Section 16
+if complying with ASHRAE 62.1 requirements. Otherwise, see the set points in
+Section 20
+if complying with Title 24 requirements.
+
+-
+The minimum outdoor air differential pressure set point shall be calculated per
+Section 5.16.4.1 (if complying with ASHRAE 62.1 requirements) or Section 5.16.4.2
+(if complying with Title 24 requirements).
+
+
+4.2. Open minimum outdoor air damper
+
+
+Open minimum outdoor air damper when the supply air fan is proven ON and the system
+is in occupied mode and the minimum differential pressure set point is greater
+than zero. Damper shall be closed otherwise.
+
+4.3. Return air damper
+
+
+-
+Return air damper minimum outdoor air control is enabled when the minimum outdoor
+air damper is open and the economizer outdoor air damper is less than a projected
+position limit, which is 5% when supply fan speed is at 100% design speed proportionally
+up to 80% when the fan is at minimum speed.
+
+-
+Return air damper minimum outdoor air control is disabled when the minimum outdoor
+air damper is closed or the economizer outdoor air damper is 10% above the projected
+position limit as determined above.
+
+-
+When enabled, the maximum return air damper set point is modulated from 100% to 0%
+to maintain the differential pressure across the minimum outdoor air damper at set
+point.
+
+
+5. Outdoor air and return air damper position limits for units with common damper
+
+This block models the multi zone VAV AHU minimum outdoor air control with a single
+common damper for minimum outdoor air and economizer functions based on outdoor airflow
+measurement, designed in line with the Section 5.16.6 of the ASHRAE Guideline 36, May 2020.
+
+
+The controller is enabled when the supply fan is proven on (u1SupFan=true) and
+the AHU operation mode
+Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes equals occupied.
+Otherwise the damper position limits are set to their corresponding maximum and minimum physical or at
+commissioning fixed limits. The state machine chart below illustrates listed conditions:
+
+
+
+
+
+The controller sets the outdoor and return damper position limits so
+that the outdoor airflow rate VOut_flow stays equal or above the
+minimum outdoor air setpoint VOutMinSet_flow. The fraction of the controller
+output signal between yMin (0, adjustable) and uRetDam_min (0.5, adjustable) is
+linearly mapped to the outdoor air damper minimal position yOutDam_min
+while the fraction of the controller output between uRetDam_min (0.5, adjustable) and
+yMax (1, adjustable) is linearly mapped to the return air damper maximum position
+yRetDam_max. Thus the dampers are not interlocked.
+
+
+The following control charts show the input/output structure and an expected damper position
+limits for a well configured controller.
+
+
+
+
+
+The expected damper position limits vs. the control loop signal are as follows:
+
+
+
+
+6. Multi zone VAV AHU economizer enable/disable switch
+
+This is a multi zone VAV AHU economizer enable/disable sequence
+based on the Section 5.16.7 of the ASHRAE Guideline 36, May 2020. Additional
+conditions included in the sequence are: freeze protection (freeze protection
+stage 0-3, see Section 5.16.12), supply fan status (on or off, see Section 5.16.5).
+
+
+The economizer is disabled whenever the outdoor air conditions
+exceed the economizer high limit setpoint.
+This sequence allows for all device types listed in
+ASHRAE 90.1-2013 and Title 24-2013.
+
+
+In addition, the economizer gets disabled without a delay whenever any of the
+following is true:
+
+
+
+The following state machine chart illustrates the transitions between enabling and disabling:
+
+
+
+
+
+After the disable signal is activated, the following procedure is applied, in order to
+prevent pressure fluctuations in the HVAC system:
+
+
+-
+The return damper gets fully opened (
yRetDam_max = uRetDamPhy_max and
+yRetDam_min = uRetDamPhy_max) for retDamFulOpeTim (180 s, adjustable)
+time period, after which the return damper gets released to its minimum outdoor airflow control position
+(yRetDam_max = uRetDam_max and yRetDam_min = uRetDam_max).
+
+-
+The outdoor air damper is closed to its minimum outoor airflow control limit (
yOutDam_max = uOutDam_min)
+after a disDel (15 s, adjustable) time delay.
+
+
+7. Modulates dampers of economizer in buildings using return fan to control the pressure
+
+Block modulates the damper of economizers of buildings with pressure controlled by
+return fan and airflow tracking. It is implemented according to Section 5.16.2.3.d,
+Figure 5.16.2.3-2 and Figure 5.16.2.3-3 of ASHRAE Guideline 36, May 2020.
+
+
+Return air damper position limits, which are the inputs to the sequence, are the outputs of
+sequences in package
+
+Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.
+It also requires input uTSup from
+Section 13
+sequences.
+
+
+The time rate of change of the damper signals is limited by a first order hold,
+using the sample time samplePeriod.
+This prevents a quick opening of the outdoor air damper, for example when the
+outdoor airflow setpoint has a step change.
+Slowing down the opening of the outdoor air damper allows the freeze protection
+to componensate with its dynamics that is faster than the opening of the outdoor air damper.
+To avoid that all dampers are closed, the return air damper has the same
+time rate of change limitation.
+
+
+The modulation is shown as the control chart:
+
+
+
+
+
+
+Note in the above chart, if the building has direct pressure control
+(have_dirCon), the profile for relief air damper control should
+be ignored.
+
+8. Modulates dampers of economizer in buildings using relief damper or fan to control the pressure
+
+This is a multi zone VAV AHU economizer modulation block. It calculates
+the outdoor and return air damper positions based on the supply air temperature
+control loop signal. It is implemented according to Section 5.16.2.3.d,
+Figure 5.16.2.3-1 of ASHRAE Guideline 36, May 2020.
+Damper positions are linearly mapped to
+the supply air control loop signal.
+
+
+When the economizer is enabled, the PI controller modulates the damper
+positions. Return and outdoor damper are not interlocked. When the economizer is disabled,
+the damper positions are set to the minimum outdoor air damper position limits.
+
+
+The control charts below show the input-output structure and an economizer damper
+modulation sequence assuming a well configured controller. Control diagram:
+
+
+
+
+
+Multi zone AHU economizer modulation control chart:
+
+
+
+
+
+9. Specify the economizer high liimits
+
+This block outputs the air economizer high limits according to the energy standard,
+device type and climate zone. The implementation is according to the Section 5.1.17 of ASHRAE
+Guideline 36, May 2020.
+
+When ASHRAE 90.1-2016 is used.
+
+| Device type | Allowed only in these ASHRAE Climate Zones | Required High Limit (Economizer OFF when) |
|---|
+
+| Fixed dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 |
+outdoor air temperature is higher than 24 °C (TCut=24°C) |
+
+
+| 5a, 6a | outdoor air temperature is higher than 21 °C (TCut=21°C) |
+
+
+| 1a, 2a, 3a, 4a | outdoor air temperature is higher than 18 °C (TCut=18°C) |
+
+
+| Differential dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5a, 5b, 5c, 6a, 6b, 7, 8 |
+outdoor air temperature is higher than the return air temperature (TCut=TRet) |
+
+
+| Fixed enthalpy with fixed dry bulb | All |
+outdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) |
+
+
+| Differential enthalpy with fixed dry bulb | All |
+outdoor air temperature is higher than 24 °C or the outdoor air enthalpy is higher than the return air enthalpy (TCut=24°C or hCut=hRet) |
+
+
+| Fixed dry bulb with differential dry bulb |
+1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 |
+outdoor air temperature is higher than 24 °C or the return air temperature (TCut=min(24°C, TRet)) |
+
+
+| 5a, 6a |
+outdoor air temperature is higher than 21 °C or the return air temperature (TCut=min(21°C, TRet)) |
+
+
+When California Title 24-2016 is used.
+
+| Device type | California Climate Zones | Required High Limit (Economizer OFF when) |
|---|
+
+| Fixed dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than 24 °C (TCut=24°C) |
+
+
+| 2, 4, 10 | outdoor air temperature is higher than 23 °C (TCut=23°C) |
+
+
+| 6, 8, 9 | outdoor air temperature is higher than 22 °C (TCut=22°C) |
+
+
+| 7 | outdoor air temperature is higher than 21 °C (TCut=21°C) |
+
+
+| Differential dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than the return air temperature (TCut=TRet) |
+
+
+| 2, 4, 10 | outdoor air temperature is higher than the return air temperature minus 1 °C (TCut=TRet-1°C) |
+
+
+| 6, 8, 9 | outdoor air temperature is higher than the return air temperature minus 2 °C (TCut=TRet-2°C) |
+
+
+| 7 | outdoor air temperature is higher than the return air temperature minus 3 °C (TCut=TRet-3°C) |
+
+
+| Fixed enthalpy with fixed dry bulb | All |
+outdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) |
+
+
+| Fixed dry bulb with differential dry bulb | 1, 3, 5, 11 to 16 |
+outdoor air temperature is higher than 24 °C or the return air temperature (TCut=24°C or TCut=TRet) |
+
+
+| 2, 4, 10 |
+outdoor air temperature is higher than 23 °C or the return air temperature minus 1 °C (TCut=min(23°C, TRet-1°C)) |
+
+
+| 6, 8, 9 |
+outdoor air temperature is higher than 22 °C or the return air temperature minus 2 °C (TCut=min(22°C, TRet-2°C)) |
+
+
+| 7 |
+outdoor air temperature is higher than 21 °C or the return air temperature minus 3 °C (TCut=min(21°C, TRet-3°C)) |
+
+
+
+
+Note that the device type Fixed dry bulb with differential dry bulb is not listed in either ASHRAE 90.1 or Title 24 standard.
+But it is possible to use in practice. See Section 3.1.6.2 in Guideline 36.
+
+10. Multi zone VAV AHU economizer control sequence
+
+Multi zone VAV AHU economizer control sequence that calculates
+outdoor and return air damper positions based on ASHRAE
+Guidline 36, May 2020, Sections: 5.16.2.3,5.16.4, 5.16.5, 5.16.6, 5.16.7.
+
+
+The sequence consists of three sets of subsequences.
+
+
+-
+First set of sequences compute the damper position limits to satisfy
+outdoor air requirements. Different sequence will be enabled depending on the
+designes minimum outdoor air and economizer function, which include
+
+-
+separate minimum outdoor air damper, with airflow measurement.
+See
+Section 3
+for a description.
+
+-
+separate minimum outdoor air damper, with differential pressure measurement.
+See
+Section 4
+for a description.
+
+-
+single common minimum outdoor air and economizer damper.
+See
+Section 5
+for a description.
+
+
+
+
+-
+The second set of sequences which have one sequence enable or disable the economizer based on
+outdoor temperature and optionally enthalpy, and based on the supply fan status,
+freeze protection stage and zone state.
+See
+Section 6
+for a description.
+
+
+-
+Third set of sequences modulate the outdoor and return damper position
+to track the supply air temperature setpoint, subject to the limits of the damper positions
+that were computed in the above blocks. Different sequence will be enabled depending
+on the types of building pressure control system, which include
+
+-
+relief damper or relief fan control.
+See
+Section 8
+for a description.
+
+-
+return fan control with airflow tracking, or with direct building pressure control.
+See
+Section 7
+for a description.
+
+
+
+
+11. Block to inplement trim and respond logic
+
+This block implements the trim and respond logic according to Section 5.1.14.3
+and 5.1.14.4 of ASHRAE Guideline 36, May 2020.
+
+
+For each upstream system or plant set point being controlled by a trim and respond
+loop, define the initial values in system or plant sequences. Values for trim,
+respond, time step, etc. shall be tuned to provide stable control.
+
+
+| Variable | Value | Definition |
|---|
+| Device | AHU Supply Fan | Associated device |
+| SP0 | iniSet (120, adjustable) | Initial setpoint |
+| SPmin | minSet (25, adjustable) | Minimum setpoint |
+| SPmax | maxSet (1000, adjustable) | Maximum setpoint |
+| Td | delTim (600 s, adjustable) | Delay timer |
+| T | samplePeriod (120 s, adjustable) | Time step |
+| I | numIgnReq (2, adjustable) | Number of ignored requests |
+| R | numOfReq | Number of requests |
+| SPtrim | triAmo (-12, adjustable) | Trim amount |
+| SPres | resAmo (15, adjustable) | Respond amount |
+| SPres_max | maxRes (32, adjustable) | Maximum response per time interval |
+
+
+The trim and respond logic shall reset setpoint within the range minSet (25, adjustable) to
+maxSet (1000, adjustable).
+When the associated device is off (uDevSta=false), the setpoint
+shall be iniSet (120, adjustable).
+The reset logic shall be active while the associated device is proven
+on (uDevSta=true), starting delTim (600 s, adjustable) after initial
+device start command.
+When active, every time step samplePeriod (120 s, adjustable), trim the setpoint by
+triAmo (-12, adjustable).
+If there are more than numIgnReq (2, adjustable) requests, respond by changing
+the setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of
+requests minus the number of ignored requests, but no more than maxRes (32, adjustable).
+
+
+In other words, every time step samplePeriod (120 s, adjustable):
+
+
+- Change setpoint by
triAmo (-12, adjustable);
+- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq
+-numIgnReq) but no more than maxRes (32, adjustable).
+
+
+11.1. Hold and release loop output
+
+
+Optionally, if the parameter have_hol is set to true, an additional
+input signal uHol allows for holding the trim and respond loop output
+at a fixed value for the longer of the time the input uHol remains true
+and the duration specified by the parameter dtHol (0 s, adjustable).
+When uHol switches back to false, the hold is released and resetting
+continues from the previously held value (without reinitializing to iniSet (120, adjustable)
+or going through a delay time of delTim (600 s, adjustable)).
+
+
+This is typically used in control sequences to freeze the reset logic during the plant
+staging process.
+Consider for example the following specification:
+\"When a plant stage change is initiated, the reset logic shall be disabled and value
+fixed at its last value for the longer of 15 minutes and the time it takes
+for the plant to successfully stage.\"
+Using this block with have_hol=true and dtHol=15*60
+yields the following sequence of events.
+
+
+- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
+- 0:12 - Stage change is completed. T&R loop output remains at 50 %
+since < 15 minutes have elapsed.
+- 0:15 - T&R is released and continues resetting from 50 %.
+
+11.2. Examples
+
+
+The figure below illustrates the trim and respond logic with a negative trim amount,
+comparing scenarios with and without holding the loop output.
+
+
+
+
+
+The figure below illustrates the trim and respond logic with a positive trim amount.
+
+
+
+
+
+The figure below illustrates the trim and respond logic with a negative trim amount,
+in a scenario where the equipment switches on and off.
+
+
+
+
+12. Block to control multi zone VAV AHU supply fan
+
+Supply fan control for a multi zone VAV AHU according to Section 5.16.1 of
+ASHRAE Guideline G36, May 2020.
+
+12.1. Supply fan start/stop
+
+
+- Supply fan shall run when system is in the Cool-down, Setup, or Occupied mode
+- If there are any VAV-reheat boxes on perimeter zones, supply fan shall also
+run when system is in Setback or Warmup mode
+
+12.2. Static pressure setpoint reset
+
+
+Static pressure setpoint shall be reset using trim-respond logic using following
+parameters as a starting point:
+
+
+| Variable | Value | Definition |
|---|
+| Device | AHU Supply Fan | Associated device |
+| SP0 | iniSet (120 Pa, adjustable) | Initial setpoint |
+| SPmin | minSet (25 Pa, adjustable) | Minimum setpoint |
+| SPmax | maxSet (1000 Pa, adjustable) | Maximum setpoint |
+| Td | delTim (600 s, adjustable) | Delay timer |
+| T | samplePeriod (120 s, adjustable) | Time step |
+| I | numIgnReq (2, adjustable) | Number of ignored requests |
+| R | uZonPreResReq | Number of requests |
+| SPtrim | triAmo (-12 Pa, adjustable) | Trim amount |
+| SPres | resAmo (15 Pa, adjustable) | Respond amount |
+| SPres_max | maxRes (32 Pa, adjustable) | Maximum response per time interval |
+
+
+12.3. Static pressure control
+
+
+Supply fan speed is controlled with a PI controller to maintain duct static pressure at setpoint
+when the fan is proven on. The setpoint for the PI controller and the measured
+duct static pressure are normalized with the maximum design static presssure
+maxSet (1000 Pa, adjustable).
+Where the zone groups served by the system are small,
+provide multiple sets of gains that are used in the control loop as a function
+of a load indicator (such as supply fan airflow rate, the area of the zone groups
+that are occupied, etc.).
+
+13. Multizone VAV AHU supply air temperature control loop and coil valves position
+
+Block that outputs the supply temperature control loop signal,
+and the coil valve postions for VAV system with multiple zones,
+implemented according to Section 5.16.2.3 of the ASHRAE Guideline G36, May 2020.
+
+
+The supply air temperature control loop signal uTSup
+is computed using a PI controller that tracks the supply air temperature
+setpoint TSupSet.
+If the fan is off, then uTSup = 0.
+
+
+Heating valve control signal (or modulating electric heating
+coil if applicable) yHeaCoi and cooling valve control signal yCooCoi
+are sequenced based on the supply air temperature control loop signal uTSup.
+From uTSup = uHea_max to uTSup = -1,
+yHeaCoi increases linearly from 0 to 1.
+Similarly, uTSup = uCoo_min to uTSup = +1,
+yCooCoi increases linearly from 0 to 1.
+
+
+
+
+
+
+
+The output uTSup can be used in a controller for the economizer.
+
+14. Block to inplement trim and respond logic
+
+This block implements the trim and respond logic according to Section 5.1.14.3
+and 5.1.14.4 of ASHRAE Guideline 36, May 2020.
+
+
+For each upstream system or plant set point being controlled by a trim and respond
+loop, define the initial values in system or plant sequences. Values for trim,
+respond, time step, etc. shall be tuned to provide stable control.
+
+
+| Variable | Value | Definition |
|---|
+| Device | AHU Supply Fan | Associated device |
+| SP0 | iniSet (291.15, adjustable) | Initial setpoint |
+| SPmin | minSet (285.15, adjustable) | Minimum setpoint |
+| SPmax | maxSet (291.15, adjustable) | Maximum setpoint |
+| Td | delTim (600 s, adjustable) | Delay timer |
+| T | samplePeriod (120 s, adjustable) | Time step |
+| I | numIgnReq (2, adjustable) | Number of ignored requests |
+| R | numOfReq | Number of requests |
+| SPtrim | triAmo (0.1, adjustable) | Trim amount |
+| SPres | resAmo (-0.2, adjustable) | Respond amount |
+| SPres_max | maxRes (-0.6, adjustable) | Maximum response per time interval |
+
+
+The trim and respond logic shall reset setpoint within the range minSet (285.15, adjustable) to
+maxSet (291.15, adjustable).
+When the associated device is off (uDevSta=false), the setpoint
+shall be iniSet (291.15, adjustable).
+The reset logic shall be active while the associated device is proven
+on (uDevSta=true), starting delTim (600 s, adjustable) after initial
+device start command.
+When active, every time step samplePeriod (120 s, adjustable), trim the setpoint by
+triAmo (0.1, adjustable).
+If there are more than numIgnReq (2, adjustable) requests, respond by changing
+the setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of
+requests minus the number of ignored requests, but no more than maxRes (-0.6, adjustable).
+
+
+In other words, every time step samplePeriod (120 s, adjustable):
+
+
+- Change setpoint by
triAmo (0.1, adjustable);
+- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq
+-numIgnReq) but no more than maxRes (-0.6, adjustable).
+
+
+14.1. Hold and release loop output
+
+
+Optionally, if the parameter have_hol is set to true, an additional
+input signal uHol allows for holding the trim and respond loop output
+at a fixed value for the longer of the time the input uHol remains true
+and the duration specified by the parameter dtHol (0 s, adjustable).
+When uHol switches back to false, the hold is released and resetting
+continues from the previously held value (without reinitializing to iniSet (291.15, adjustable)
+or going through a delay time of delTim (600 s, adjustable)).
+
+
+This is typically used in control sequences to freeze the reset logic during the plant
+staging process.
+Consider for example the following specification:
+\"When a plant stage change is initiated, the reset logic shall be disabled and value
+fixed at its last value for the longer of 15 minutes and the time it takes
+for the plant to successfully stage.\"
+Using this block with have_hol=true and dtHol=15*60
+yields the following sequence of events.
+
+
+- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
+- 0:12 - Stage change is completed. T&R loop output remains at 50 %
+since < 15 minutes have elapsed.
+- 0:15 - T&R is released and continues resetting from 50 %.
+
+14.2. Examples
+
+
+The figure below illustrates the trim and respond logic with a negative trim amount,
+comparing scenarios with and without holding the loop output.
+
+
+
+
+
+The figure below illustrates the trim and respond logic with a positive trim amount.
+
+
+
+
+
+The figure below illustrates the trim and respond logic with a negative trim amount,
+in a scenario where the equipment switches on and off.
+
+
+
+
+15. Supply air temperature setpoint for multi zone system
+
+Block that outputs the supply air temperature setpoint and the coil valve control
+inputs for VAV system with multiple zones, implemented according to Section 5.16.2 of
+the ASHRAE Guideline G36, May 2020.
+
+
+The control loop is enabled when the supply air fan u1SupFan is proven on,
+and disabled and the output set to deadband (no heating, minimum economizer) otherwise.
+
+ The supply air temperature setpoint is computed as follows.
+
+15.1. Setpoints for TSupCoo_min, TSupCoo_max,
+TOut_min, TOut_max
+
+
+
+Per Section 3.1.4.1, the setpoints are design information.
+
+
+-
+The
TSupCoo_min (12 °C, adjustable) should be set no lower than the design coil leaving air
+temperature to prevent excessive chilled water temperature reset requests.
+
+-
+The
TSupCoo_max (18 °C, adjustable) is typically 18 °C (65 °F) in mild and dry climates
+and 16 °C (60 °F) or lower in humid climates. It should not typically be
+greater than 18 °C (65 °F).
+
+-
+The default range of outdoor air temperature (
TOut_min=16°C,
+TOut_max=21°C) used to reset the occupied mode TSupSet
+was chosen to maximize economizer hours. It may be preferable to use a lower
+range of outdoor air temperature (e.g. TOut_min=13°C,
+TOut_max=18°C) to minimize fan energy.
+
+
+
+15.2. During occupied and Setup modes (uOpeMod=1, uOpeMod=2)
+
+
+The TSupSet shall be reset from TSupCoo_min (12 °C, adjustable) when the outdoor
+air temperature is TOut_max (21 °C, adjustable) and above, proportionally up to
+maximum supply temperature when the outdoor air temperature is TOut_min (16 °C, adjustable) and
+below. The maximum supply temperature shall be reset using trim and respond logic between
+TSupCoo_min (12 °C, adjustable) and TSupCoo_max (18 °C, adjustable). Parameters suggested for the
+trim and respond logic are shown in the table below. They require adjustment
+during the commissioning and tuning phase.
+
+
+
+| Variable | Value | Definition |
|---|
+| Device | AHU Supply Fan | Associated device |
+| SP0 | iniSet (18 °C, adjustable) | Initial setpoint |
+| SPmin | TSupCoo_min (12 °C, adjustable) | Minimum setpoint |
+| SPmax | TSupCoo_max (18 °C, adjustable) | Maximum setpoint |
+| Td | delTim (600 s, adjustable) | Delay timer |
+| T | samplePeriod (120 s, adjustable) | Time step |
+| I | numIgnReq (2, adjustable) | Number of ignored requests |
+| R | uZonTemResReq | Number of requests |
+| SPtrim | triAmo (0.1 K, adjustable) | Trim amount |
+| SPres | resAmo (-0.2 K, adjustable) | Respond amount |
+| SPres_max | maxRes (-0.6 K, adjustable) | Maximum response per time interval |
+
+
+
+
+
+
+
+15.3. During Cool-down modes (uOpeMod=3)
+
+
+Supply air temperature setpoint TSupSet shall be TSupCoo_min (12 °C, adjustable).
+
+15.4. During Setback and Warmup modes (uOpeMod=4, uOpeMod=5)
+
+
+Supply air temperature setpoint TSupSet shall be TSupWarUpSetBac (35 °C, adjustable).
+
+16. Outdoor airflow related calculations at the AHU level
+
+This sequence outputs AHU level uncorrected minimum outdoor airflow rate
+VUncOutAir_flow and effective minimum outdoor airflow rate
+VEffOutAir_flow when complying with ASHRAE Standard 62.1 ventilation requirements.
+It is implemented according to Section 5.16.3.1 of ASHRAE
+Guideline G36, May 2020.
+
+
+It requires following inputs which are sum or maximum of the outputs from
+the zone level calculation. See
+
+Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.SumZone
+for these inputs.
+
+
+-
+Sum of the adjusted population component breathing zone flow rate for all zones that are in
+all zone groups in occupied mode,
VSumAdjPopBreZon_flow.
+
+-
+Sum of the adjusted area component breathing zone flow rate for all zones that are in
+all zone groups in occupied mode,
VSumAdjAreBreZon_flow.
+
+-
+Sum of the zone primary airflow rates for all zones in all zone groups that are
+in occupied mode,
VSumZonPri_flow.
+
+-
+Maximum zone outdoor air fraction for all zones in all zone groups that are
+in occupied mode,
uOutAirFra_max.
+
+
+
+The calculation is done using the steps below.
+
+
+-
+See Section 3.1.4.2.a of Guideline 36 for setpoints
VUncDesOutAir_flow (0 m3/s, adjustable)
+and VDesTotOutAir_flow (0 m3/s, adjustable).
+
+-
+The uncorrected outdoor airflow rate setpoint
VUncOutAir_flow is recalculated
+continuously based on the adjusted population and area component breathing zone flow rate
+of the zones being served determined in accordance with Section 5.2.1.3. See
+
+Buildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints.
+ VUncOutAir_flow = min(VUncDesOutAir_flow, (VSumAdjPopBreZon_flow + VSumAdjAreBreZon_flow))
+
+
+-
+Calculate the current system ventilation efficiency as
+
sysVenEff = 1 + (VUncOutAir_flow/VSumZonPri_flow) - uOutAirFra_max
+
+
+-
+Calculate the effective minimum outdoor air setpoint
VEffOutAir_flow as
+the uncorrected outdoor air intake divided by the system ventilation efficiency,
+but no larger than the design total outdoor airflow rate VDesTotOutAir_flow (0 m3/s, adjustable):
+ VEffOutAir_flow = min(VUncOutAir_flow/sysVenEff, VDesTotOutAir_flow)
+
+
+
+17. Relief damper control for AHUs using actuated dampers without fan
+
+Sequence for controlling actuated relief damper yRelDam for AHUs using
+actuated relief damper without a fan.
+It is implemented according to Section 5.16.8 of ASHRAE Guideline G36, May 2020.
+
+
+-
+Relief dampers shall be enabled when the associated supply fan is proven on
+(
u1SupFan = true), and disabled otherwise.
+
+-
+When enabled, use a P-only control loop to modulate relief dampers to maintain building
+static pressure
dpBui at its setpoint, which is by defaul
+12 Pa (0.05 inchWC).
+
+-
+Close damper when disabled.
+
+
+18. Return fan control with direct building pressure control
+
+Setpoint for return fan discharge pressure and relief air damper
+for a multi zone VAV AHU according to Section 5.16.10 of ASHRAE Guideline G36, May 2020.
+
+
+Note that this sequence assumes that the AHU units with return fan having the
+return fan with direct building pressure control have the minimum outdoor air damper.
+
+
+-
+
Return fan operates whenever associated supply fan is proven on and is
+off otherwise.
+
+-
+
Return fan is controlled to maintain return fan discharge static pressure
+at setpoint dpBuiSet (12 Pa, adjustable).
+
+-
+
Relief damper is only enabled when the associated supply and return
+fans are proven on (u1SupFan=true) and the minimum outdoor air damper is open
+(to be controlled in a separate sequence).
+The relief dampers is closed when the fan is disabled.
+
+-
+
The building static pressure is time averaged with a sliding 5-minute window
+to dampen fluctuations. The averaged value shall be displayed and is used
+for control.
+
+-
+
When the relief damper is enabled, a control loop modulates the relief damper
+in sequence with the return fan static pressure setpoint as shown in the figure
+below to maintain the building pressure equal to dpBuiSet (12 Pa, adjustable),
+which is by default 12 Pa (0.05 inches).
+
+
+
+
+The output signal of the building pressure control is as follows:
+
+
+-
+From 0 to 0.5, the building pressure control loop modulates the exhaust
+dampers from
yRelDam = 0 (closed) to yRelDam = 1 (open).
+
+-
+From 0.5 to 1, the building pressure control loop resets the return fan
+discharge static pressure setpoint from
p_rel_RetFan_min (2.4 Pa, adjustable)
+to p_rel_RetFan_max (40 Pa, adjustable). The p_rel_RetFan_min (2.4 Pa, adjustable) and
+p_rel_RetFan_max (40 Pa, adjustable) are specified in Section 3.2.1.4.
+
+
+
+
+
+19. Return fan control for AHUs using return fan with airflow tracking
+
+Sequence for controlling return fan yRetFan for AHUs using return fan
+with airflow tracking.
+It is implemented according to Section 5.16.11 of ASHRAE Guideline G36, May 2020.
+
+
+-
+Return fan operates whenever associated supply fan is proven on
+(
u1SupFan = true).
+
+-
+Return fan speed shall be controlled to maintain return airflow equal to supply
+airflow less differential
difFloSet (0.1 m3/s, adjustable), as determined per section 3.2.1.5.
+
+-
+Relief or exhaust dampers shall be enabled when the associated supply and return
+fans are proven on and closed otherwise. Exhaust dampers shall modulate as the inverse
+of the return air damper per section 5.16.2.3. This is implemented in
+Section 7
+
+
+20. AHU level setpoint calculation
+
+This sequence outputs AHU level effective outdoor air absolute minimum and design
+minimum setpoints VEffAbsOutAir_flow, VEffDesOutAir_flow and
+the nomalized minimum setpoint effOutAir_normalized
+when complying with California Title 24 ventilation requirements.
+It is implemented according to Section 5.16.3.2 of ASHRAE
+Guideline G36, May 2020.
+
+
+It calculates as below:
+
+
+-
+See the sum of zone absolute and design minimum outdoor airflow setpoint
+
VSumZonAbsMin_flow and VSumZonDesMin_flow from
+
+Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.SumZone for the detailed
+description.
+
+-
+Effective outdoor air absolute minimum and design minimum setpoints
+(
VEffAbsOutAir_flow and VEffDesOutAir_flow) are recalculated
+continuously based on the mode of the zones being served.
+
+-
+Effective outdoor air absolute minimum setpoint
VEffAbsOutAir_flow is
+the sum of VZonAbsMin_flow for all zones in all zone groups that
+are in occupied mode but shall be no larger than the absolute minimum outdoor airflow
+VAbsOutAir_flow (0 m3/s, adjustable).
+
+-
+Effective outdoor air design minimum setpoint
VEffDesOutAir_flow is
+the sum of VZonDesMin_flow for all zones in all zone groups that
+are in occupied mode but shall be no larger than the absolute minimum outdoor airflow
+VDesOutAir_flow (0 m3/s, adjustable).
+
+
+
+-
+According to section 5.16.4, 5.16.5 and 5.16.6, the effective minimum outdoor airflow
+setpoint should be reset based on the highest zone CO2 control- loop signal from
+
VEffAbsOutAir_flow at 50% signal to VEffDesOutAir_flow
+at 100% signal. When there is no CO2 sensor in any zone, the effective minimum
+outdoor airflow setpoint should be equal to the VEffDesOutAir_flow.
+
+
+21. Sequence for control of relief fan in AHU
+
+Sequence for controling relief fan that is part of AHU. It is developed based on
+Section 5.16.9 of ASHRAE Guideline 36, May 2020, with the modification to accommodate
+the single relief fan control.
+
+
+-
+The relief fan shall be enabled when the AHU supply fan is proven ON
+(
u1SupFan=true), and shall be disabled otherwise.
+
+-
+Building static pressure (
dpBui) shall be time averaged with a sliding
+5-minute window and 15 second sampling rate (to dampen fluctuations). The average
+value shall be that displayed and used for control.
+
+-
+A P-only control loop maintains the building pressure at a set point (
dpBuiSet (12 Pa, adjustable))
+of 12 Pa (0.05 in. of water) with an output ranging from 0% to 100%. The loop is disabled
+and output set to zero when the relief fan is disabled.
+
+-
+Fan speed shall be equal to the PID signal but no less than the minimum speed.
+
+-
+When relief system is enabled, and the control loop
+output is above 5%, open the motorized dampers to the relief fans;
+close the dampers when the loop output drops to 0% for 5 minutes.
+
+-
+When the control loop output is above minimum speed (
relFanSpe_min (0.1, adjustable)) plus 15%
+by 7 minutes, start the relief fan.
+
+-
+When the control loop output is below minimum speed (
relFanSpe_min (0.1, adjustable))
+by 5 minutes, shut off the relief fan.
+
+
+
+
+22. Multizone VAV air handling unit controller
+
+Block that is applied for multizone VAV AHU control. It outputs the supply fan status
+and the operation speed, outdoor and return air damper position, supply air
+temperature setpoint and the valve position of the cooling and heating coils.
+It is implemented according to the Section 5.16 of ASHRAE Guideline 36, May 2020.
+
+
+The sequence consists of eight types of subsequences.
+
+22.1. Supply fan speed control
+
+
+The fan speed control is implemented according to Section 5.16.1. It outputs
+the boolean signal y1SupFan to turn on or off the supply fan.
+In addition, based on the pressure reset request uZonPreResReq
+from the VAV zones controller, the
+sequence resets the duct pressure setpoint, and uses this setpoint
+to modulate the fan speed ySupFanSpe using a PI controller.
+See
+Section 12
+for more detailed description.
+
+22.2. Minimum outdoor airflow setting
+
+
+According to current occupany, supply operation status ySupFan,
+zone temperatures and the discharge air temperature, the sequence computes the
+minimum outdoor airflow rate setpoint, which is used as input for the economizer control.
+More detailed information can be found in
+
+Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.
+
+22.3. Economizer control
+
+
+The block outputs outdoor and return air damper position, yOutDamPos and
+yRetDamPos. First, it computes the position limits to satisfy the minimum
+outdoor airflow requirement. Second, it determines the availability of the economizer based
+on the outdoor condition. The dampers are modulated to track the supply air temperature
+loop signal, which is calculated from the sequence below, subject to the minimum outdoor airflow
+requirement and economizer availability.
+See
+Section 10
+for more detailed description.
+
+22.4. Supply air temperature setpoint
+
+
+Based on the Section 5.16.2, the sequence first sets the maximum supply air temperature
+based on reset requests collected from each zone uZonTemResReq. The
+outdoor temperature TOut and operation mode uOpeMod are used
+along with the maximum supply air temperature, for computing the supply air temperature
+setpoint. See
+Section 15
+for more detailed description.
+
+22.5. Coil valve control
+
+
+The subsequence retrieves supply air temperature setpoint from previous sequence.
+Along with the measured supply air temperature and the supply fan status, it
+generates coil valve positions. See
+Section 13
+for more detailed description.
+
+22.6. Freeze protection
+
+
+Based on the Section 5.16.12, the sequence enables freeze protection if the
+measured supply air temperature belows certain thresholds. There are three
+protection stages. See
+Section 1
+for more detailed description.
+
+22.7. Building pressure control
+
+
+By selecting different building pressure control designs, which includes using actuated
+relief damper without fan, using actuated relief dampers with relief fan, using
+return fan with direct building pressure control, or using return fan with airflow
+tracking control, the sequences controls relief fans, relief dampers and return fans.
+See belows sequences for more detailed description:
+
+
+-
+Section 17
+
+- Relief fan control
+Section 21 is not
+included in the AHU controller. This sequence controls all the relief fans that are
+serving one common space, which may include multiple air handling units.
+
+-
+Section 19
+
+-
+Section 18
+
+
+22.8. Plant request
+
+
+According to the Section 5.16.16, the sequence send out heating or cooling plant requests
+if the supply air temperature is below or above threshold value, or the heating or
+cooling valves have been widely open for certain times. See
+Section 2
+for more detailed description.
+
+
\ No newline at end of file
diff --git a/test/expressionEvaluation/MultiZoneVavParamAndDoc.json b/test/expressionEvaluation/MultiZoneVavParamAndDoc.json
index 62f06f2d..443ced4b 100644
--- a/test/expressionEvaluation/MultiZoneVavParamAndDoc.json
+++ b/test/expressionEvaluation/MultiZoneVavParamAndDoc.json
@@ -1,8596 +1 @@
-{
- "parameters": [
- {
- "name": "eneStd",
- "value": null,
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "venStd",
- "value": null,
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashCliZon",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone.Not_Specified",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24CliZon",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone.Not_Specified",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "have_frePro",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "freSta",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Hardwired_to_equipment",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "minOADes",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "buiPreCon",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReliefFan",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "have_ahuRelFan",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoHigLimCon",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.FixedDryBulb",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "cooCoi",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.CoolingCoil.WaterBased",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "heaCoi",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.HeatingCoil.WaterBased",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "have_perZonRehBox",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "VUncDesOutAir_flow",
- "value": "0",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "VDesTotOutAir_flow",
- "value": "0",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "VAbsOutAir_flow",
- "value": "0",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "VDesOutAir_flow",
- "value": "0",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "pIniSet",
- "value": "120",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "pMinSet",
- "value": "25",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "pMaxSet",
- "value": "1000",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "pDelTim",
- "value": "600",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "pSamplePeriod",
- "value": "120",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "pNumIgnReq",
- "value": "2",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "pTriAmo",
- "value": "-12",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "pResAmo",
- "value": "15",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "pMaxRes",
- "value": "32",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "fanSpeCon",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kFanSpe",
- "value": "0.1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiFanSpe",
- "value": "60",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdFanSpe",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supFanSpe_max",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supFanSpe_min",
- "value": "0.1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "iniFanSpe",
- "value": "supFanSpe_min",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TSupCoo_min",
- "value": "285.15",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "TSupCoo_max",
- "value": "291.15",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "TOut_min",
- "value": "289.15",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "TOut_max",
- "value": "294.15",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "TSupWarUpSetBac",
- "value": "308.15",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "delTimSupTem",
- "value": "600",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "samPerSupTem",
- "value": "120",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "ignReqSupTem",
- "value": "2",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "triAmoSupTem",
- "value": "0.1",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "resAmoSupTem",
- "value": "-0.2",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "maxResSupTem",
- "value": "-0.6",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "valCon",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kVal",
- "value": "0.05",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiVal",
- "value": "600",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdVal",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "uHeaCoi_max",
- "value": "-0.25",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "uCooCoi_min",
- "value": "0.25",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "minOAConTyp",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kMinOA",
- "value": "0.03",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiMinOA",
- "value": "120",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdMinOA",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "have_CO2Sen",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "dpAbsMinOutDam",
- "value": "5",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "dpDesMinOutDam",
- "value": "20",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "dpConTyp",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kDp",
- "value": "1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiDp",
- "value": "0.5",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdDp",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "uRetDam_min",
- "value": "0.5",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "delTOutHis",
- "value": "1",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "delEntHis",
- "value": "1000",
- "unit": "J/kg",
- "displayUnit": null
- },
- {
- "name": "retDamFulOpeTim",
- "value": "180",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "disDel",
- "value": "15",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retDamPhy_max",
- "value": "1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "retDamPhy_min",
- "value": "0",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "outDamPhy_max",
- "value": "1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "outDamPhy_min",
- "value": "0",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "minOutDamPhy_max",
- "value": "1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "minOutDamPhy_min",
- "value": "0",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "uHeaMax",
- "value": "-0.25",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "uCooMin",
- "value": "+0.25",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "minHotWatReq",
- "value": "2",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "freProHeaCoiCon",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kFrePro",
- "value": "0.05",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiFrePro",
- "value": "120",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdFrePro",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "yMaxFrePro",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "yMinFrePro",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "dpBuiSet",
- "value": "12",
- "unit": "Pa",
- "displayUnit": "Pa"
- },
- {
- "name": "kRelDam",
- "value": "0.5",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "difFloSet",
- "value": "0.1",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "retFanCon",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.PI",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "kRetFan",
- "value": "1",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "TiRetFan",
- "value": "0.5",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "TdRetFan",
- "value": "0.1",
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- },
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- },
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- },
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- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
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- "value": "plaReq.lesThr3.t",
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- },
- {
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- },
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- },
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- "value": "plaReq.lesThr3.t",
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- },
- {
- "name": "ecoCon.minOADes",
- "value": "minOADes",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.buiPreCon",
- "value": "buiPreCon",
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- },
- {
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- "value": "eneStd",
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- },
- {
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- "value": "ecoHigLimCon",
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- },
- {
- "name": "ecoCon.ashCliZon",
- "value": "ashCliZon",
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- },
- {
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- },
- {
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- "value": "supFanSpe_min",
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- },
- {
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- },
- {
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- "value": "kMinOA",
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- },
- {
- "name": "ecoCon.TiMinOA",
- "value": "TiMinOA",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "ecoCon.TdMinOA",
- "value": "TdMinOA",
- "unit": "s",
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- },
- {
- "name": "ecoCon.venStd",
- "value": "venStd",
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- },
- {
- "name": "ecoCon.have_CO2Sen",
- "value": "have_CO2Sen",
- "unit": null,
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- },
- {
- "name": "ecoCon.dpAbsMinOutDam",
- "value": "dpAbsMinOutDam",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.dpDesMinOutDam",
- "value": "dpDesMinOutDam",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "ecoCon.dpConTyp",
- "value": "dpConTyp",
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- },
- {
- "name": "ecoCon.kDp",
- "value": "kDp",
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- },
- {
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- "value": "TiDp",
- "unit": "s",
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- },
- {
- "name": "ecoCon.TdDp",
- "value": "TdDp",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "ecoCon.uRetDam_min",
- "value": "uRetDam_min",
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- "displayUnit": null
- },
- {
- "name": "ecoCon.delTOutHis",
- "value": "delTOutHis",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "ecoCon.delEntHis",
- "value": "delEntHis",
- "unit": "J/kg",
- "displayUnit": null
- },
- {
- "name": "ecoCon.retDamFulOpeTim",
- "value": "retDamFulOpeTim",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "ecoCon.disDel",
- "value": "disDel",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "ecoCon.retDamPhy_max",
- "value": "retDamPhy_max",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "ecoCon.retDamPhy_min",
- "value": "retDamPhy_min",
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- "displayUnit": null
- },
- {
- "name": "ecoCon.outDamPhy_max",
- "value": "outDamPhy_max",
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- "displayUnit": null
- },
- {
- "name": "ecoCon.outDamPhy_min",
- "value": "outDamPhy_min",
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- "displayUnit": null
- },
- {
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- },
- {
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- "value": "minOutDamPhy_min",
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- "displayUnit": null
- },
- {
- "name": "ecoCon.uHeaMax",
- "value": "uHeaMax",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "ecoCon.uCooMin",
- "value": "uCooMin",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "ecoCon.uOutDamMax",
- "value": "(uHeaMax +uCooMin)/2",
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- "displayUnit": null
- },
- {
- "name": "ecoCon.uRetDamMin",
- "value": "(uHeaMax +uCooMin)/2",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.minSpe",
- "value": "ecoCon.minSpe",
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- "displayUnit": null
- },
- {
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- "value": "ecoCon.minOAConTyp",
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- },
- {
- "name": "ecoCon.sepAFMS.kMinOA",
- "value": "ecoCon.kMinOA",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.TiMinOA",
- "value": "ecoCon.TiMinOA",
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- },
- {
- "name": "ecoCon.sepAFMS.TdMinOA",
- "value": "ecoCon.TdMinOA",
- "unit": "s",
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- },
- {
- "name": "ecoCon.sepAFMS.retDamPhy_max",
- "value": "ecoCon.retDamPhy_max",
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- },
- {
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- "value": "ecoCon.retDamPhy_min",
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- },
- {
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- },
- {
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- },
- {
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- },
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- },
- {
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- },
- {
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- },
- {
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- "value": "ecoCon.sepAFMS.TiMinOA",
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- },
- {
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- "value": "ecoCon.sepAFMS.TdMinOA",
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- },
- {
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- },
- {
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- "value": "ecoCon.sepAFMS.minOutDamPhy_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.conMinOA.yMin",
- "value": "ecoCon.sepAFMS.minOutDamPhy_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.conMinOA.Ni",
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- "displayUnit": null
- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
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- "unit": null,
- "displayUnit": null
- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
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- },
- {
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- },
- {
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- },
- {
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- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.conMinOA.assMesYMinMax.message",
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- "unit": null,
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- },
- {
- "name": "ecoCon.sepAFMS.conInt1.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.occupied",
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- {
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- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
- "name": "ecoCon.sepAFMS.minOutDamPhyPosMaxSig.k",
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- },
- {
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- },
- {
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- },
- {
- "name": "ecoCon.sepAFMS.con2.k",
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- },
- {
- "name": "ecoCon.sepAFMS.minFanSpe.k",
- "value": "ecoCon.sepAFMS.minSpe",
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- {
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- {
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- },
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- },
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- },
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- },
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- },
- {
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- },
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- },
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- },
- {
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- },
- {
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- },
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- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
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- "value": "ecoCon.damLim.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ecoCon.damLim.sigFraForOutDam.k",
- "value": "ecoCon.damLim.uRetDam_min",
- "unit": null,
- "displayUnit": null
- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.occupied",
- "unit": null,
- "displayUnit": null
- },
- {
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- "unit": null,
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- },
- {
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- },
- {
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- "value": "ecoCon.delEntHis",
- "unit": "J/kg",
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- },
- {
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- },
- {
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- },
- {
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- },
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- },
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- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
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- "unit": "J/kg",
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- },
- {
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- },
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- "value": "ecoCon.enaDis.disDel",
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- },
- {
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- },
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- },
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
- {
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- },
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- },
- {
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- {
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- },
- {
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- },
- {
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- },
- {
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- },
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- },
- {
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- },
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- {
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- },
- {
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- },
- {
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- },
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- },
- {
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- {
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- },
- {
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- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.h",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.t",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.t",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.h",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.have_hysteresis",
- "value": "conSupFan.staPreSetRes.greThr1.h >= 1e-10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.greHys.t",
- "value": "conSupFan.staPreSetRes.greThr1.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.greHys.h",
- "value": "conSupFan.staPreSetRes.greThr1.h",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.greHys.pre_y_start",
- "value": "conSupFan.staPreSetRes.greThr1.pre_y_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.greThr1.greNoHys.t",
- "value": "conSupFan.staPreSetRes.greThr1.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.gai.k",
- "value": "-1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.iniSetCon.k",
- "value": "conSupFan.staPreSetRes.iniSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.numIgnReqCon.k",
- "value": "conSupFan.staPreSetRes.numIgnReq",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.triAmoCon.k",
- "value": "conSupFan.staPreSetRes.triAmo",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.maxResCon.k",
- "value": "conSupFan.staPreSetRes.maxRes",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.maxSetCon.k",
- "value": "conSupFan.staPreSetRes.maxSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.zerTri.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.minSetCon.k",
- "value": "conSupFan.staPreSetRes.minSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.assMes.message",
- "value": "\"Trim amount 'triAmo' and respond amount 'resAmo' must have opposite signs.\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.assMes2.message",
- "value": "\"Respond amount 'resAmo' and maximum respond amount 'maxRes' must have same sign.\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.zer.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.fal.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.truHol.trueHoldDuration",
- "value": "conSupFan.staPreSetRes.dtHol",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.truHol.falseHoldDuration",
- "value": "0",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.truHol.pre_u_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.samTri.period",
- "value": "conSupFan.staPreSetRes.samplePeriod",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.samTri.shift",
- "value": "0",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.staPreSetRes.samTri.t0",
- "value": null,
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.controllerType",
- "value": "conSupFan.controllerType",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.k",
- "value": "conSupFan.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Ti",
- "value": "conSupFan.Ti",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Td",
- "value": "conSupFan.Td",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.yMax",
- "value": "conSupFan.maxSpe",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.yMin",
- "value": "conSupFan.minSpe",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.reverseActing",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.y_reset",
- "value": "conSupFan.iniSpe",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.P.k",
- "value": "conSupFan.conSpe.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.I.k",
- "value": "conSupFan.conSpe.k/conSupFan.conSpe.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.I.y_start",
- "value": "conSupFan.conSpe.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.D.y_start",
- "value": "conSupFan.conSpe.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.lim.uMax",
- "value": "conSupFan.conSpe.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.lim.uMin",
- "value": "conSupFan.conSpe.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.revAct",
- "value": " if conSupFan.conSpe.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.with_I",
- "value": "conSupFan.conSpe.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or conSupFan.conSpe.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.with_D",
- "value": "conSupFan.conSpe.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or conSupFan.conSpe.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.kDer.k",
- "value": "conSupFan.conSpe.k*conSupFan.conSpe.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.TDer.k",
- "value": "conSupFan.conSpe.Td/conSupFan.conSpe.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.uS_revAct.k",
- "value": "conSupFan.conSpe.revAct/conSupFan.conSpe.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.uMea_revAct.k",
- "value": "conSupFan.conSpe.revAct/conSupFan.conSpe.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.antWinGai.k",
- "value": "1/(conSupFan.conSpe.k*conSupFan.conSpe.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.yResSig.k",
- "value": "conSupFan.conSpe.y_reset",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.cheYMinMax.k",
- "value": "conSupFan.conSpe.yMin < conSupFan.conSpe.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conSpe.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.zerSpe.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.con.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conInt.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.coolDown",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conInt4.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.warmUp",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conInt1.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.setUp",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conInt2.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.occupied",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.conInt3.k",
- "value": "Buildings.Controls.OBC.ASHRAE.G36.Types.OperationModes.setBack",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.gaiNor.k",
- "value": "conSupFan.maxSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conSupFan.firOrdHol.samplePeriod",
- "value": "conSupFan.samplePeriod",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conSupFan.firOrdHol.t0",
- "value": null,
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supSig.have_heaCoi",
- "value": "heaCoi == Buildings.Controls.OBC.ASHRAE.G36.Types.HeatingCoil.WaterBased or heaCoi == Buildings.Controls.OBC.ASHRAE.G36.Types.HeatingCoil.Electric",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.have_cooCoi",
- "value": "cooCoi == Buildings.Controls.OBC.ASHRAE.G36.Types.CoolingCoil.WaterBased or cooCoi == Buildings.Controls.OBC.ASHRAE.G36.Types.CoolingCoil.DXCoil",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.controllerType",
- "value": "valCon",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.kTSup",
- "value": "kVal",
- "unit": "1/K",
- "displayUnit": null
- },
- {
- "name": "supSig.TiTSup",
- "value": "TiVal",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supSig.TdTSup",
- "value": "TdVal",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supSig.uHea_max",
- "value": "uHeaCoi_max",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "supSig.uCoo_min",
- "value": "uCooCoi_min",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.controllerType",
- "value": "supSig.controllerType",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.k",
- "value": "supSig.kTSup",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Ti",
- "value": "supSig.TiTSup",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Td",
- "value": "supSig.TdTSup",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.yMax",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.yMin",
- "value": "-1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.reverseActing",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.y_reset",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.P.k",
- "value": "supSig.conTSup.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.I.k",
- "value": "supSig.conTSup.k/supSig.conTSup.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.I.y_start",
- "value": "supSig.conTSup.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.D.y_start",
- "value": "supSig.conTSup.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.lim.uMax",
- "value": "supSig.conTSup.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.lim.uMin",
- "value": "supSig.conTSup.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.revAct",
- "value": " if supSig.conTSup.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.with_I",
- "value": "supSig.conTSup.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or supSig.conTSup.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.with_D",
- "value": "supSig.conTSup.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or supSig.conTSup.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.kDer.k",
- "value": "supSig.conTSup.k*supSig.conTSup.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.TDer.k",
- "value": "supSig.conTSup.Td/supSig.conTSup.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.uS_revAct.k",
- "value": "supSig.conTSup.revAct/supSig.conTSup.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.uMea_revAct.k",
- "value": "supSig.conTSup.revAct/supSig.conTSup.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.antWinGai.k",
- "value": "1/(supSig.conTSup.k*supSig.conTSup.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.yResSig.k",
- "value": "supSig.conTSup.y_reset",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.cheYMinMax.k",
- "value": "supSig.conTSup.yMin < supSig.conTSup.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conTSup.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.uHeaMaxCon.k",
- "value": "supSig.uHea_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.negOne.k",
- "value": "-1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.uCooMinCon.k",
- "value": "supSig.uCoo_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.zer.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.one.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conSigCoo.limitBelow",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conSigCoo.limitAbove",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conSigHea.limitBelow",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "supSig.conSigHea.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.TSupCoo_min",
- "value": "TSupCoo_min",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.TSupCoo_max",
- "value": "TSupCoo_max",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.TOut_min",
- "value": "TOut_min",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.TOut_max",
- "value": "TOut_max",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.TSupWarUpSetBac",
- "value": "TSupWarUpSetBac",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.delTim",
- "value": "delTimSupTem",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.samplePeriod",
- "value": "samPerSupTem",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.numIgnReq",
- "value": "ignReqSupTem",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.triAmo",
- "value": "triAmoSupTem",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "conTSupSet.resAmo",
- "value": "resAmoSupTem",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "conTSupSet.maxRes",
- "value": "maxResSupTem",
- "unit": "K",
- "displayUnit": "K"
- },
- {
- "name": "conTSupSet.maxSupTemRes.have_hol",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.iniSet",
- "value": "conTSupSet.iniSet",
- "unit": null,
- "displayUnit": null
- },
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- },
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- "value": "conTSupSet.delTim",
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- },
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- "value": "conTSupSet.samplePeriod",
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- },
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- "value": "conTSupSet.numIgnReq",
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- },
- {
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- "value": "conTSupSet.triAmo",
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- "displayUnit": null
- },
- {
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- "value": "conTSupSet.resAmo",
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- "displayUnit": null
- },
- {
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- },
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- "unit": "s",
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- },
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- },
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- },
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- },
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- },
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- },
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- },
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- },
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- },
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- },
- {
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- },
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- },
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- },
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- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.greThr1.pre_y_start",
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- "unit": null,
- "displayUnit": null
- },
- {
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- },
- {
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- },
- {
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- {
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- },
- {
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- "unit": null,
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- },
- {
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- },
- {
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- "displayUnit": null
- },
- {
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- "displayUnit": null
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- "displayUnit": null
- },
- {
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- "unit": null,
- "displayUnit": null
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- {
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- "value": "conTSupSet.maxSupTemRes.iniSet",
- "unit": null,
- "displayUnit": null
- },
- {
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- "value": "conTSupSet.maxSupTemRes.numIgnReq",
- "unit": null,
- "displayUnit": null
- },
- {
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- "value": "conTSupSet.maxSupTemRes.triAmo",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.maxResCon.k",
- "value": "conTSupSet.maxSupTemRes.maxRes",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.maxSetCon.k",
- "value": "conTSupSet.maxSupTemRes.maxSet",
- "unit": null,
- "displayUnit": null
- },
- {
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- "unit": null,
- "displayUnit": null
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- {
- "name": "conTSupSet.maxSupTemRes.minSetCon.k",
- "value": "conTSupSet.maxSupTemRes.minSet",
- "unit": null,
- "displayUnit": null
- },
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- "unit": null,
- "displayUnit": null
- },
- {
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- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.zer.k",
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- "unit": null,
- "displayUnit": null
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- {
- "name": "conTSupSet.maxSupTemRes.fal.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.truHol.trueHoldDuration",
- "value": "conTSupSet.maxSupTemRes.dtHol",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.truHol.falseHoldDuration",
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- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.truHol.pre_u_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.samTri.period",
- "value": "conTSupSet.maxSupTemRes.samplePeriod",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.samTri.shift",
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- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxSupTemRes.samTri.t0",
- "value": null,
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "conTSupSet.TDeaBan",
- "value": "273.15 +26",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.iniSet",
- "value": "conTSupSet.TSupCoo_max",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.maxSet",
- "value": "conTSupSet.TSupCoo_max",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.minSet",
- "value": "conTSupSet.TSupCoo_min",
- "unit": "K",
- "displayUnit": "degC"
- },
- {
- "name": "conTSupSet.lin.limitBelow",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.lin.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.minOutTem.k",
- "value": "conTSupSet.TOut_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.maxOutTem.k",
- "value": "conTSupSet.TOut_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.minSupTem.k",
- "value": "conTSupSet.TSupCoo_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.supTemWarUpSetBac.k",
- "value": "conTSupSet.TSupWarUpSetBac",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.cooDowMod.k",
- "value": "3",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.intLesThr1.t",
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- "unit": null,
- "displayUnit": null
- },
- {
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- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.intLesThr2.t",
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- "unit": null,
- "displayUnit": null
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- {
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- "unit": null,
- "displayUnit": null
- },
- {
- "name": "conTSupSet.TDea.k",
- "value": "conTSupSet.TDeaBan",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.minOADes",
- "value": "minOADes",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.VUncDesOutAir_flow",
- "value": "VUncDesOutAir_flow",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.VDesTotOutAir_flow",
- "value": "VDesTotOutAir_flow",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.uncDesOutAir.k",
- "value": "ashOutAirSet.VUncDesOutAir_flow",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.addPar.p",
- "value": "1",
- "unit": null,
- "displayUnit": null
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- {
- "name": "ashOutAirSet.desOutAir.k",
- "value": "ashOutAirSet.VDesTotOutAir_flow",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.gaiDivZer.k",
- "value": "0.001",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "ashOutAirSet.neaZer.k",
- "value": "0.0001",
- "unit": null,
- "displayUnit": null
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- {
- "name": "relDam.dpBuiSet",
- "value": "dpBuiSet",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "relDam.k",
- "value": "kRelDam",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "relDam.conP.controllerType",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.P",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.k",
- "value": "relDam.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Ti",
- "value": "0.5",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Td",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relDam.conP.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.yMax",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.yMin",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.reverseActing",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.P.k",
- "value": "relDam.conP.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.I.k",
- "value": "relDam.conP.k/relDam.conP.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.I.y_start",
- "value": "relDam.conP.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.D.y_start",
- "value": "relDam.conP.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.lim.uMax",
- "value": "relDam.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.lim.uMin",
- "value": "relDam.conP.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.revAct",
- "value": " if relDam.conP.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.with_I",
- "value": "relDam.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or relDam.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.with_D",
- "value": "relDam.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or relDam.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.kDer.k",
- "value": "relDam.conP.k*relDam.conP.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.TDer.k",
- "value": "relDam.conP.Td/relDam.conP.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.uS_revAct.k",
- "value": "relDam.conP.revAct/relDam.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.uMea_revAct.k",
- "value": "relDam.conP.revAct/relDam.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.antWinGai.k",
- "value": "1/(relDam.conP.k*relDam.conP.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.cheYMinMax.k",
- "value": "relDam.conP.yMin < relDam.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.con.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.conP.con1.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.zerDam.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.dpBuiSetPoi.k",
- "value": "relDam.dpBuiSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relDam.zer.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.dpBuiSet",
- "value": "dpBuiSet",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.p_rel_RetFan_min",
- "value": "p_rel_RetFan_min",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.p_rel_RetFan_max",
- "value": "p_rel_RetFan_max",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.disSpe_min",
- "value": "retFanSpe_min",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.disSpe_max",
- "value": "retFanSpe_max",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conTyp",
- "value": "retFanCon",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.k",
- "value": "kRetFan",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.Ti",
- "value": "TiRetFan",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.Td",
- "value": "TdRetFan",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.movMea.delta",
- "value": "300",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.movMea.tStart",
- "value": null,
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.controllerType",
- "value": "retFanDpCon.conTyp",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.k",
- "value": "retFanDpCon.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Ti",
- "value": "retFanDpCon.Ti",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Td",
- "value": "retFanDpCon.Td",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.yMax",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.yMin",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.reverseActing",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.P.k",
- "value": "retFanDpCon.conP.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.I.k",
- "value": "retFanDpCon.conP.k/retFanDpCon.conP.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.I.y_start",
- "value": "retFanDpCon.conP.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.D.y_start",
- "value": "retFanDpCon.conP.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.lim.uMax",
- "value": "retFanDpCon.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.lim.uMin",
- "value": "retFanDpCon.conP.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.revAct",
- "value": " if retFanDpCon.conP.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.with_I",
- "value": "retFanDpCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or retFanDpCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.with_D",
- "value": "retFanDpCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or retFanDpCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.kDer.k",
- "value": "retFanDpCon.conP.k*retFanDpCon.conP.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.TDer.k",
- "value": "retFanDpCon.conP.Td/retFanDpCon.conP.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.uS_revAct.k",
- "value": "retFanDpCon.conP.revAct/retFanDpCon.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.uMea_revAct.k",
- "value": "retFanDpCon.conP.revAct/retFanDpCon.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.antWinGai.k",
- "value": "1/(retFanDpCon.conP.k*retFanDpCon.conP.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.cheYMinMax.k",
- "value": "retFanDpCon.conP.yMin < retFanDpCon.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.con.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conP.con1.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linExhAirDam.limitBelow",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linExhAirDam.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linRetFanStaPre.limitBelow",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linRetFanStaPre.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linRetFanSpe.limitBelow",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.linRetFanSpe.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.dpBuiSetPoi.k",
- "value": "retFanDpCon.dpBuiSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.retFanDisPreMin.k",
- "value": "retFanDpCon.p_rel_RetFan_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.retFanDisPreMax.k",
- "value": "retFanDpCon.p_rel_RetFan_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.zer.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.zer1.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.con.k",
- "value": "0.5",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.one.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.conOne.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.retFanSpeMin.k",
- "value": "retFanDpCon.disSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.retFanSpeMax.k",
- "value": "retFanDpCon.disSpe_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanDpCon.zer2.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.difFloSet",
- "value": "difFloSet",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conTyp",
- "value": "retFanCon",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.k",
- "value": "kRetFan",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.Ti",
- "value": "TiRetFan",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.Td",
- "value": "TdRetFan",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.maxSpe",
- "value": "retFanSpe_max",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.minSpe",
- "value": "retFanSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.controllerType",
- "value": "retFanAirTra.conTyp",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.k",
- "value": "retFanAirTra.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Ti",
- "value": "retFanAirTra.Ti",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Td",
- "value": "retFanAirTra.Td",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.yMax",
- "value": "retFanAirTra.maxSpe",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.yMin",
- "value": "retFanAirTra.minSpe",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.reverseActing",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.P.k",
- "value": "retFanAirTra.conP.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.I.k",
- "value": "retFanAirTra.conP.k/retFanAirTra.conP.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.I.y_start",
- "value": "retFanAirTra.conP.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.D.y_start",
- "value": "retFanAirTra.conP.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.lim.uMax",
- "value": "retFanAirTra.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.lim.uMin",
- "value": "retFanAirTra.conP.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.revAct",
- "value": " if retFanAirTra.conP.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.with_I",
- "value": "retFanAirTra.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or retFanAirTra.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.with_D",
- "value": "retFanAirTra.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or retFanAirTra.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.kDer.k",
- "value": "retFanAirTra.conP.k*retFanAirTra.conP.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.TDer.k",
- "value": "retFanAirTra.conP.Td/retFanAirTra.conP.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.uS_revAct.k",
- "value": "retFanAirTra.conP.revAct/retFanAirTra.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.uMea_revAct.k",
- "value": "retFanAirTra.conP.revAct/retFanAirTra.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.antWinGai.k",
- "value": "1/(retFanAirTra.conP.k*retFanAirTra.conP.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.cheYMinMax.k",
- "value": "retFanAirTra.conP.yMin < retFanAirTra.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.con.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.conP.con1.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.zerSpe.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "retFanAirTra.difFlo.k",
- "value": "retFanAirTra.difFloSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.minOADes",
- "value": "minOADes",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.have_CO2Sen",
- "value": "have_CO2Sen",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.VAbsOutAir_flow",
- "value": "VAbsOutAir_flow",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.VDesOutAir_flow",
- "value": "VDesOutAir_flow",
- "unit": "m3/s",
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.absOutAir.k",
- "value": "tit24OutAirSet.VAbsOutAir_flow",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.desOutAir.k",
- "value": "tit24OutAirSet.VDesOutAir_flow",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.con.k",
- "value": "0.5",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.con1.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.effOutAir.limitBelow",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.effOutAir.limitAbove",
- "value": "true",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.gai.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "tit24OutAirSet.neaZer.k",
- "value": "0.0001",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.relFanSpe_min",
- "value": "relFanSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.dpBuiSet",
- "value": "dpBuiSet",
- "unit": "Pa",
- "displayUnit": null
- },
- {
- "name": "relFanCon.k",
- "value": "kRelFan",
- "unit": "1",
- "displayUnit": null
- },
- {
- "name": "relFanCon.hys",
- "value": "hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.movMea.delta",
- "value": "300",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.movMea.tStart",
- "value": null,
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.dpBuiSetPoi.k",
- "value": "relFanCon.dpBuiSet",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conOne.k",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.controllerType",
- "value": "Buildings.Controls.OBC.CDL.Types.SimpleController.P",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.k",
- "value": "relFanCon.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Ti",
- "value": "0.5",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Td",
- "value": "0.1",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.r",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.yMax",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.yMin",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Ni",
- "value": "0.9",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Nd",
- "value": "10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.xi_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.yd_start",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.reverseActing",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.P.k",
- "value": "relFanCon.conP.k",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.I.k",
- "value": "relFanCon.conP.k/relFanCon.conP.Ti",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.I.y_start",
- "value": "relFanCon.conP.xi_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.D.y_start",
- "value": "relFanCon.conP.yd_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.lim.uMax",
- "value": "relFanCon.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.lim.uMin",
- "value": "relFanCon.conP.yMin",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.revAct",
- "value": " if relFanCon.conP.reverseActing then 1 else -1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.with_I",
- "value": "relFanCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PI or relFanCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.with_D",
- "value": "relFanCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or relFanCon.conP.controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.kDer.k",
- "value": "relFanCon.conP.k*relFanCon.conP.Td",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.TDer.k",
- "value": "relFanCon.conP.Td/relFanCon.conP.Nd",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Dzero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.uS_revAct.k",
- "value": "relFanCon.conP.revAct/relFanCon.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.uMea_revAct.k",
- "value": "relFanCon.conP.revAct/relFanCon.conP.r",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.antWinGai.k",
- "value": "1/(relFanCon.conP.k*relFanCon.conP.Ni)",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.cheYMinMax.k",
- "value": "relFanCon.conP.yMin < relFanCon.conP.yMax",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.assMesYMinMax.message",
- "value": "\"LimPID: Limits must be yMin < yMax\"",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.Izero.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.con.k",
- "value": "0",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.conP.con1.k",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.t",
- "value": "0.05",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.t",
- "value": "0.05",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.t",
- "value": "0.05",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.have_hysteresis",
- "value": "relFanCon.greThr.h >= 1e-10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.greHys.t",
- "value": "relFanCon.greThr.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.greHys.h",
- "value": "relFanCon.greThr.h",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.greHys.pre_y_start",
- "value": "relFanCon.greThr.pre_y_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr.greNoHys.t",
- "value": "relFanCon.greThr.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.t",
- "value": "0.005",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.t",
- "value": "0.005",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.t",
- "value": "0.005",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.have_hysteresis",
- "value": "relFanCon.lesThr.h >= 1e-10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.lesHys.t",
- "value": "relFanCon.lesThr.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.lesHys.h",
- "value": "relFanCon.lesThr.h",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.lesHys.pre_y_start",
- "value": "relFanCon.lesThr.pre_y_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr.lesNoHys.t",
- "value": "relFanCon.lesThr.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.tim.t",
- "value": "300",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.t",
- "value": "relFanCon.relFanSpe_min +0.15",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.t",
- "value": "relFanCon.relFanSpe_min +0.15",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.t",
- "value": "relFanCon.relFanSpe_min +0.15",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.have_hysteresis",
- "value": "relFanCon.greThr2.h >= 1e-10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.greHys.t",
- "value": "relFanCon.greThr2.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.greHys.h",
- "value": "relFanCon.greThr2.h",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.greHys.pre_y_start",
- "value": "relFanCon.greThr2.pre_y_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.greThr2.greNoHys.t",
- "value": "relFanCon.greThr2.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.upTim.t",
- "value": "420",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.t",
- "value": "relFanCon.relFanSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.t",
- "value": "relFanCon.relFanSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.t",
- "value": "relFanCon.relFanSpe_min",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.h",
- "value": "relFanCon.hys",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.pre_y_start",
- "value": "false",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.have_hysteresis",
- "value": "relFanCon.lesThr3.h >= 1e-10",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.lesHys.t",
- "value": "relFanCon.lesThr3.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.lesHys.h",
- "value": "relFanCon.lesThr3.h",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.lesHys.pre_y_start",
- "value": "relFanCon.lesThr3.pre_y_start",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.lesThr3.lesNoHys.t",
- "value": "relFanCon.lesThr3.t",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.dowTim.t",
- "value": "300",
- "unit": "s",
- "displayUnit": null
- },
- {
- "name": "relFanCon.booToRea2.realTrue",
- "value": "1",
- "unit": null,
- "displayUnit": null
- },
- {
- "name": "relFanCon.booToRea2.realFalse",
- "value": "0",
- "unit": null,
- "displayUnit": null
- }
- ],
- "documentation": [
- {
- "instance": {
- "name": "frePro",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Freeze protection sequence for multizone air handling unit",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nFreeze protection sequence for multizone AHU system. It is developed based on Section\n5.16.12 of ASHRAE Guideline 36, May 2020.\n
\n\n- \nIf the supply air temperature
TAirSup drops below 4.4 °C (40 °F)\nfor 5 minutes, send two (or more, as required to ensure that heating plant is active,\nminHotWatReq) heating hot-water plant requests, override the outdoor\nair damper to the minimum position, and modulate the heating coil to maintain a suppy\nair temperature of at least 6 °C (42 °F).\nDisable this function when supply air temperature rises above 7 °C (45 °F) for\n5 minutes.\n \n- \nIf the supply air temperature
TAirSup drops below 3.3 °C (38 °F)\nfor 5 minutes, fully close both the economizer damper and the minimum outdoor air\ndamper for 1 hour and set a Level 3 alarm noting that minimum ventilation was\ninterrupted. After 1 hour, the unit shall resume minimum outdoor air ventilation\nand enter the previous stage of freeze protection.\n\n- \nIf it is warm enough that the supply air temperature rises above 7 °C (45 °F)\nwith minimum ventilation, the unit will remain in Stage 1 freeze protection for 5\nminutes then resume normal operation.\n
\n
\n \n- \nUpon signal from the freeze-stat (if installed),\nor if supply air temperature drops below 3.3 °C (38 °F) for 15 minutes or\nbelow 1 °C (34 °F) for 5 minutes, shut down supply and return (or relief)\nfan(s), close outdoor air damper, open the cooling-coil valve to 100%, and energize\nthe CHW pump system. Also send two (or more, as required to ensure that heating plant\nis active,
minHotWatReq) heating hot-water plant requests,\nmodulate the heating coil to maintain the higher of the supply air temperature or\nthe mixed air temperature at 27 °C (80 °F), and set a Level 2 alarm indicating\nthe unit is shut down by freeze protection.\n\n- \nIf a freeze-protection shutdown is triggered by a low air temperature sensor reading,\nit shall remain in effect until it is reset by a software switch from the operator's\nworkstation. (If a freeze-stat with a physical reset switch is used instead, there\nshall be no software reset switch.)\n
\n
\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection"
- },
- {
- "instance": {
- "name": "plaReq",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Output plant requests for multizone air handling unit",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis sequence outputs the system reset requests for multiple zone air handling unit. The\nimplementation is according to the Section 5.16.16 of ASHRAE Guideline 36, May 2020. \n
\nChilled water reset request yChiWatResReq
\n\n- \nIf the supply air temperature
TAirSup exceeds the supply air temperature\nset point TAirSupSet by 3 °C (5 °F) for 2 minutes, send 3 requests.\n \n- \nIf the supply air temperature
TAirSup exceeds the supply air temperature\nset point TAirSupSet by 2 °C (3 °F) for 2 minutes, send 2 requests.\n \n- \nElse if the chilled water valve position
uCooCoiSet is greater than\n95%, send 1 request until the uCooCoiSet is less than 85%.\n \n- \nElse if the chilled water valve position
uCooCoiSet is less than 95%,\nsend 0 request.\n \n
\nChiller plant request yChiPlaReq
\n\nSend the chiller plant that serves the system a chiller plant request as follows:\n
\n\n- \nIf the chilled water valve position
uCooCoiSet is greater than\n95%, send 1 request until the uCooCoiSet is less than 10%.\n \n- \nElse if the chilled water valve position
uCooCoiSet is less than 95%,\nsend 0 request.\n \n
\nIf there is a hot-water coil, hot-water\nreset requests yHotWatResReq
\n\n- \nIf the supply air temperature
TAirSup is 17 °C (30 °F) less than\nthe supply air temperature set point TAirSupSet for 5 minutes, send 3\nrequests.\n \n- \nElse if the supply air temperature
TAirSup is 8 °C (15 °F) less than\nthe supply air temperature set point TAirSupSet for 5 minutes, send 2\nrequests.\n \n- \nElse if the hot water valve position
uHeaCoiSet is greater than\n95%, send 1 request until the uHeaCoiSet is less than 85%.\n \n- \nElse if the hot water valve position
uHeaCoiSet is less than 95%,\nsend 0 request.\n \n
\nIf there is a hot-water coil and heating hot-water plant, heating hot-water\nplant reqeusts yHotWatPlaReq
\n\nSend the heating hot-water plant that serves the air handling unit a heating hot-water\nplant request as follows:\n
\n\n- \nIf the hot water valve position
uHeaCoiSet is greater than 95%, send 1\nrequest until the hot water valve position is less than 10%.\n \n- \nIf the hot water valve position
uHeaCoiSet is less than 95%, send 0 requests.\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests"
- },
- {
- "instance": {
- "name": "ecoCon.sepAFMS",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "minOADes"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and airflow measurement",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and airflow measurement.\nIt is implemented according to Section 5.16.5 of the ASHRAE Guideline 36, May 2020.\n
\nMinimum outdoor air set point
\n\nCalculate the outdoor air set point with\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.\n
\nMinimum outdoor air control loop
\n\nMinimum outdoor air control loop is enabled when the supply fan is proven ON\n(u1SupFan=true) and in occupied mode, and disabled and output set to\nzero otherwise\n
\n\nThe minimum outdoor airflow rate shall be maintained at the minimum outdoor air\nset point by a reverse-acting control loop whose output is 0% to 100%.\nFrom 0% to 50% loop output, the minimum outdoor air damper is opened from 0%\n(minOutDamPhy_min) to 100% (minOutDamPhy_max).\n
\nReturn air damper
\n\n- \nReturn air damper minimum outdoor air control is enabled when the minimum outdoor\nair damper is fully open and the economizer outdoor air damper is less than a projected\nposition limit, which is 5% when supply fan speed is at 100% design speed proportionally\nup to 80% when the fan is at minimum speed.\n
\n- \nReturn air damper minimum outdoor air control is disabled when the minimum outdoor\nair damper is not fully open or the economizer outdoor air damper is 10% above the projected\nposition limit as determined above.\n
\n- \nWhen enabled, the maximum return air damper set point is reduced from 100%\n(
retDamPhy_max) to 0% (retDamPhy_min)\nas the minimum outdoor air loop output rises from 50% to 100%.\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.SeparateWithAFMS"
- },
- {
- "instance": {
- "name": "ecoCon.sepDp",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "minOADes"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersPressure"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and differential pressure control",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and differential pressure control.\nIt is implemented according to Section 5.16.4 of the ASHRAE Guideline 36, May 2020.\n
\nDifferential pressure setpoint across the minimum outdoor air damper
\n\nOpen minimum outdoor air damper
\n\nOpen minimum outdoor air damper when the supply air fan is proven ON and the system\nis in occupied mode and the minimum differential pressure set point is greater\nthan zero. Damper shall be closed otherwise.\n
\nReturn air damper
\n\n- \nReturn air damper minimum outdoor air control is enabled when the minimum outdoor\nair damper is open and the economizer outdoor air damper is less than a projected\nposition limit, which is 5% when supply fan speed is at 100% design speed proportionally\nup to 80% when the fan is at minimum speed.\n
\n- \nReturn air damper minimum outdoor air control is disabled when the minimum outdoor\nair damper is closed or the economizer outdoor air damper is 10% above the projected\nposition limit as determined above.\n
\n- \nWhen enabled, the maximum return air damper set point is modulated from 100% to 0%\nto maintain the differential pressure across the minimum outdoor air damper at set\npoint.\n
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.SeparateWithDP"
- },
- {
- "instance": {
- "name": "ecoCon.damLim",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "minOADes"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.SingleDamper"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Outdoor air and return air damper position limits for units with common damper",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis block models the multi zone VAV AHU minimum outdoor air control with a single\ncommon damper for minimum outdoor air and economizer functions based on outdoor airflow\nmeasurement, designed in line with the Section 5.16.6 of the ASHRAE Guideline 36, May 2020.\n
\n\nThe controller is enabled when the supply fan is proven on (u1SupFan=true) and\nthe AHU operation mode \nBuildings.Controls.OBC.ASHRAE.G36.Types.OperationModes equals occupied.\nOtherwise the damper position limits are set to their corresponding maximum and minimum physical or at\ncommissioning fixed limits. The state machine chart below illustrates listed conditions:\n
\n\n![\\\"Image]()
\n
\n\nThe controller sets the outdoor and return damper position limits so\nthat the outdoor airflow rate VOut_flow stays equal or above the\nminimum outdoor air setpoint VOutMinSet_flow. The fraction of the controller\noutput signal between yMin and uRetDam_min is\nlinearly mapped to the outdoor air damper minimal position yOutDam_min\nwhile the fraction of the controller output between uRetDam_min and\nyMax is linearly mapped to the return air damper maximum position\nyRetDam_max. Thus the dampers are not interlocked.\n
\n\nThe following control charts show the input/output structure and an expected damper position\nlimits for a well configured controller.\n
\n\n![\\\"Image]()
\n
\n\nThe expected damper position limits vs. the control loop signal are as follows:\n
\n\n![\\\"Image]()
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.Common"
- },
- {
- "instance": {
- "name": "ecoCon.enaDis",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Multi zone VAV AHU economizer enable/disable switch",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis is a multi zone VAV AHU economizer enable/disable sequence\nbased on the Section 5.16.7 of the ASHRAE Guideline 36, May 2020. Additional\nconditions included in the sequence are: freeze protection (freeze protection\nstage 0-3, see Section 5.16.12), supply fan status (on or off, see Section 5.16.5).\n
\n\nThe economizer is disabled whenever the outdoor air conditions\nexceed the economizer high limit setpoint.\nThis sequence allows for all device types listed in\nASHRAE 90.1-2013 and Title 24-2013.\n
\n\nIn addition, the economizer gets disabled without a delay whenever any of the\nfollowing is true:\n
\n\n\nThe following state machine chart illustrates the transitions between enabling and disabling:\n
\n\n![\\\"Image]()
\n
\n\nAfter the disable signal is activated, the following procedure is applied, in order to\nprevent pressure fluctuations in the HVAC system:\n
\n\n- \nThe return damper gets fully opened (
yRetDam_max = uRetDamPhy_max and\nyRetDam_min = uRetDamPhy_max) for retDamFulOpeTim\ntime period, after which the return damper gets released to its minimum outdoor airflow control position\n(yRetDam_max = uRetDam_max and yRetDam_min = uRetDam_max).\n \n- \nThe outdoor air damper is closed to its minimum outoor airflow control limit (
yOutDam_max = uOutDam_min)\nafter a disDel time delay.\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Enable"
- },
- {
- "instance": {
- "name": "ecoCon.modRet",
- "protected": false,
- "condition": {
- "simple_expression": "([object Object])"
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Modulates dampers of economizer in buildings using return fan to control the pressure",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock modulates the damper of economizers of buildings with pressure controlled by\nreturn fan and airflow tracking. It is implemented according to Section 5.16.2.3.d,\nFigure 5.16.2.3-2 and Figure 5.16.2.3-3 of ASHRAE Guideline 36, May 2020.\n
\n\nReturn air damper position limits, which are the inputs to the sequence, are the outputs of\nsequences in package\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.\nIt also requires input uTSup from\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals\nsequences.\n
\n\nThe time rate of change of the damper signals is limited by a first order hold,\nusing the sample time samplePeriod.\nThis prevents a quick opening of the outdoor air damper, for example when the\noutdoor airflow setpoint has a step change.\nSlowing down the opening of the outdoor air damper allows the freeze protection\nto componensate with its dynamics that is faster than the opening of the outdoor air damper.\nTo avoid that all dampers are closed, the return air damper has the same\ntime rate of change limitation.\n
\n\nThe modulation is shown as the control chart:\n
\n
\n\n![\\\"Image]()
\n
\n\nNote in the above chart, if the building has direct pressure control\n(have_dirCon), the profile for relief air damper control should\nbe ignored.\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.ReturnFan"
- },
- {
- "instance": {
- "name": "ecoCon.modRel",
- "protected": false,
- "condition": {
- "simple_expression": "([object Object])"
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Modulates dampers of economizer in buildings using relief damper or fan to control the pressure",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis is a multi zone VAV AHU economizer modulation block. It calculates\nthe outdoor and return air damper positions based on the supply air temperature\ncontrol loop signal. It is implemented according to Section 5.16.2.3.d,\nFigure 5.16.2.3-1 of ASHRAE Guideline 36, May 2020.\nDamper positions are linearly mapped to\nthe supply air control loop signal.\n
\n\nWhen the economizer is enabled, the PI controller modulates the damper\npositions. Return and outdoor damper are not interlocked. When the economizer is disabled,\nthe damper positions are set to the minimum outdoor air damper position limits.\n
\n\nThe control charts below show the input-output structure and an economizer damper\nmodulation sequence assuming a well configured controller. Control diagram:\n
\n\n![\\\"Image]()
\n
\n\nMulti zone AHU economizer modulation control chart:\n
\n
\n\n![\\\"Image]()
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Reliefs"
- },
- {
- "instance": {
- "name": "ecoCon.ecoHigLim",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Specify the economizer high liimits",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis block outputs the air economizer high limits according to the energy standard,\ndevice type and climate zone. The implementation is according to the Section 5.1.17 of ASHRAE\nGuideline 36, May 2020.\n
\nWhen ASHRAE 90.1-2016 is used.
\n\n| Device type | Allowed only in these ASHRAE Climate Zones | Required High Limit (Economizer OFF when) |
|---|
\n\n| Fixed dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 | \noutdoor air temperature is higher than 24 °C (TCut=24°C) | \n
\n\n| 5a, 6a | outdoor air temperature is higher than 21 °C (TCut=21°C) | \n
\n\n| 1a, 2a, 3a, 4a | outdoor air temperature is higher than 18 °C (TCut=18°C) | \n
\n\n| Differential dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5a, 5b, 5c, 6a, 6b, 7, 8 | \noutdoor air temperature is higher than the return air temperature (TCut=TRet) | \n
\n\n| Fixed enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) | \n
\n\n| Differential enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the outdoor air enthalpy is higher than the return air enthalpy (TCut=24°C or hCut=hRet) | \n
\n\n| Fixed dry bulb with differential dry bulb | \n1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 | \noutdoor air temperature is higher than 24 °C or the return air temperature (TCut=min(24°C, TRet)) | \n
\n\n| 5a, 6a | \noutdoor air temperature is higher than 21 °C or the return air temperature (TCut=min(21°C, TRet)) | \n
\n
\nWhen California Title 24-2016 is used.
\n\n| Device type | California Climate Zones | Required High Limit (Economizer OFF when) |
|---|
\n\n| Fixed dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than 24 °C (TCut=24°C) | \n
\n\n| 2, 4, 10 | outdoor air temperature is higher than 23 °C (TCut=23°C) | \n
\n\n| 6, 8, 9 | outdoor air temperature is higher than 22 °C (TCut=22°C) | \n
\n\n| 7 | outdoor air temperature is higher than 21 °C (TCut=21°C) | \n
\n\n| Differential dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than the return air temperature (TCut=TRet) | \n
\n\n| 2, 4, 10 | outdoor air temperature is higher than the return air temperature minus 1 °C (TCut=TRet-1°C) | \n
\n\n| 6, 8, 9 | outdoor air temperature is higher than the return air temperature minus 2 °C (TCut=TRet-2°C) | \n
\n\n| 7 | outdoor air temperature is higher than the return air temperature minus 3 °C (TCut=TRet-3°C) | \n
\n\n| Fixed enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) | \n
\n\n| Fixed dry bulb with differential dry bulb | 1, 3, 5, 11 to 16 | \noutdoor air temperature is higher than 24 °C or the return air temperature (TCut=24°C or TCut=TRet) | \n
\n\n| 2, 4, 10 | \noutdoor air temperature is higher than 23 °C or the return air temperature minus 1 °C (TCut=min(23°C, TRet-1°C)) | \n
\n\n| 6, 8, 9 | \noutdoor air temperature is higher than 22 °C or the return air temperature minus 2 °C (TCut=min(22°C, TRet-2°C)) | \n
\n\n| 7 | \noutdoor air temperature is higher than 21 °C or the return air temperature minus 3 °C (TCut=min(21°C, TRet-3°C)) | \n
\n
\n
\n\nNote that the device type Fixed dry bulb with differential dry bulb is not listed in either ASHRAE 90.1 or Title 24 standard.\nBut it is possible to use in practice. See Section 3.1.6.2 in Guideline 36.\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.Generic.AirEconomizerHighLimits"
- },
- {
- "instance": {
- "name": "ecoCon",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Multi zone VAV AHU economizer control sequence",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nMulti zone VAV AHU economizer control sequence that calculates\noutdoor and return air damper positions based on ASHRAE\nGuidline 36, May 2020, Sections: 5.16.2.3,5.16.4, 5.16.5, 5.16.6, 5.16.7.\n
\n\nThe sequence consists of three sets of subsequences.\n
\n\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller"
- },
- {
- "instance": {
- "name": "conSupFan.staPreSetRes",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Block to inplement trim and respond logic",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis block implements the trim and respond logic according to Section 5.1.14.3 \nand 5.1.14.4 of ASHRAE Guideline 36, May 2020.\n
\n\nFor each upstream system or plant set point being controlled by a trim and respond\nloop, define the initial values in system or plant sequences. Values for trim,\nrespond, time step, etc. shall be tuned to provide stable control.\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | numOfReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n\nThe trim and respond logic shall reset setpoint within the range minSet to\nmaxSet.\nWhen the associated device is off (uDevSta=false), the setpoint\nshall be iniSet.\nThe reset logic shall be active while the associated device is proven\non (uDevSta=true), starting delTim after initial\ndevice start command.\nWhen active, every time step samplePeriod, trim the setpoint by\ntriAmo.\nIf there are more than numIgnReq requests, respond by changing\nthe setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of\nrequests minus the number of ignored requests, but no more than maxRes.\n
\n\nIn other words, every time step samplePeriod:\n
\n\n- Change setpoint by
triAmo; \n- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq\n-numIgnReq) but no more than maxRes.\n \n
\nHold and release loop output
\n\nOptionally, if the parameter have_hol is set to true, an additional\ninput signal uHol allows for holding the trim and respond loop output\nat a fixed value for the longer of the time the input uHol remains true \nand the duration specified by the parameter dtHol.\nWhen uHol switches back to false, the hold is released and resetting\ncontinues from the previously held value (without reinitializing to iniSet\nor going through a delay time of delTim). \n
\n\nThis is typically used in control sequences to freeze the reset logic during the plant\nstaging process.\nConsider for example the following specification:
\n\\\"When a plant stage change is initiated, the reset logic shall be disabled and value\nfixed at its last value for the longer of 15 minutes and the time it takes \nfor the plant to successfully stage.\\\"
\nUsing this block with have_hol=true and dtHol=15*60 \nyields the following sequence of events.\n
\n\n- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
\n- 0:12 - Stage change is completed. T&R loop output remains at 50 % \nsince < 15 minutes have elapsed.
\n- 0:15 - T&R is released and continues resetting from 50 %.
\n
\nExamples
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\ncomparing scenarios with and without holding the loop output.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a positive trim amount.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\nin a scenario where the equipment switches on and off.\n
\n\n![\\\"Trend]()
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.Generic.TrimAndRespond"
- },
- {
- "instance": {
- "name": "conSupFan",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Block to control multi zone VAV AHU supply fan",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nSupply fan control for a multi zone VAV AHU according to Section 5.16.1 of \nASHRAE Guideline G36, May 2020.\n
\nSupply fan start/stop
\n\n- Supply fan shall run when system is in the Cool-down, Setup, or Occupied mode
\n- If there are any VAV-reheat boxes on perimeter zones, supply fan shall also\nrun when system is in Setback or Warmup mode
\n
\nStatic pressure setpoint reset
\n\nStatic pressure setpoint shall be reset using trim-respond logic using following\nparameters as a starting point:\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | uZonPreResReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n
\nStatic pressure control
\n\nSupply fan speed is controlled with a PI controller to maintain duct static pressure at setpoint\nwhen the fan is proven on. The setpoint for the PI controller and the measured\nduct static pressure are normalized with the maximum design static presssure\nmaxSet.\nWhere the zone groups served by the system are small,\nprovide multiple sets of gains that are used in the control loop as a function\nof a load indicator (such as supply fan airflow rate, the area of the zone groups\nthat are occupied, etc.).\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan"
- },
- {
- "instance": {
- "name": "supSig",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Multizone VAV AHU supply air temperature control loop and coil valves position",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock that outputs the supply temperature control loop signal,\nand the coil valve postions for VAV system with multiple zones,\nimplemented according to Section 5.16.2.3 of the ASHRAE Guideline G36, May 2020.\n
\n\nThe supply air temperature control loop signal uTSup\nis computed using a PI controller that tracks the supply air temperature\nsetpoint TSupSet.\nIf the fan is off, then uTSup = 0.\n
\n\nHeating valve control signal (or modulating electric heating\ncoil if applicable) yHeaCoi and cooling valve control signal yCooCoi\nare sequenced based on the supply air temperature control loop signal uTSup.\nFrom uTSup = uHea_max to uTSup = -1,\nyHeaCoi increases linearly from 0 to 1.\nSimilarly, uTSup = uCoo_min to uTSup = +1,\nyCooCoi increases linearly from 0 to 1.\n
\n\n\n![\\\"Image]()
\n
\n\n\nThe output uTSup can be used in a controller for the economizer.\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals"
- },
- {
- "instance": {
- "name": "conTSupSet.maxSupTemRes",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Block to inplement trim and respond logic",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis block implements the trim and respond logic according to Section 5.1.14.3 \nand 5.1.14.4 of ASHRAE Guideline 36, May 2020.\n
\n\nFor each upstream system or plant set point being controlled by a trim and respond\nloop, define the initial values in system or plant sequences. Values for trim,\nrespond, time step, etc. shall be tuned to provide stable control.\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | numOfReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n\nThe trim and respond logic shall reset setpoint within the range minSet to\nmaxSet.\nWhen the associated device is off (uDevSta=false), the setpoint\nshall be iniSet.\nThe reset logic shall be active while the associated device is proven\non (uDevSta=true), starting delTim after initial\ndevice start command.\nWhen active, every time step samplePeriod, trim the setpoint by\ntriAmo.\nIf there are more than numIgnReq requests, respond by changing\nthe setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of\nrequests minus the number of ignored requests, but no more than maxRes.\n
\n\nIn other words, every time step samplePeriod:\n
\n\n- Change setpoint by
triAmo; \n- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq\n-numIgnReq) but no more than maxRes.\n \n
\nHold and release loop output
\n\nOptionally, if the parameter have_hol is set to true, an additional\ninput signal uHol allows for holding the trim and respond loop output\nat a fixed value for the longer of the time the input uHol remains true \nand the duration specified by the parameter dtHol.\nWhen uHol switches back to false, the hold is released and resetting\ncontinues from the previously held value (without reinitializing to iniSet\nor going through a delay time of delTim). \n
\n\nThis is typically used in control sequences to freeze the reset logic during the plant\nstaging process.\nConsider for example the following specification:
\n\\\"When a plant stage change is initiated, the reset logic shall be disabled and value\nfixed at its last value for the longer of 15 minutes and the time it takes \nfor the plant to successfully stage.\\\"
\nUsing this block with have_hol=true and dtHol=15*60 \nyields the following sequence of events.\n
\n\n- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
\n- 0:12 - Stage change is completed. T&R loop output remains at 50 % \nsince < 15 minutes have elapsed.
\n- 0:15 - T&R is released and continues resetting from 50 %.
\n
\nExamples
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\ncomparing scenarios with and without holding the loop output.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a positive trim amount.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\nin a scenario where the equipment switches on and off.\n
\n\n![\\\"Trend]()
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.Generic.TrimAndRespond"
- },
- {
- "instance": {
- "name": "conTSupSet",
- "protected": false,
- "condition": null,
- "cdlAnnotation": null
- },
- "descriptionString": "Supply air temperature setpoint for multi zone system",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock that outputs the supply air temperature setpoint and the coil valve control\ninputs for VAV system with multiple zones, implemented according to Section 5.16.2 of\nthe ASHRAE Guideline G36, May 2020.\n
\n\nThe control loop is enabled when the supply air fan u1SupFan is proven on,\nand disabled and the output set to deadband (no heating, minimum economizer) otherwise.\n
\n The supply air temperature setpoint is computed as follows.
\n\nSetpoints for TSupCoo_min, TSupCoo_max,\nTOut_min, TOut_max\n
\n\nPer Section 3.1.4.1, the setpoints are design information.\n
\n\n- \nThe
TSupCoo_min should be set no lower than the design coil leaving air\ntemperature to prevent excessive chilled water temperature reset requests.\n \n- \nThe
TSupCoo_max is typically 18 °C (65 °F) in mild and dry climates\nand 16 °C (60 °F) or lower in humid climates. It should not typically be\ngreater than 18 °C (65 °F).\n \n- \nThe default range of outdoor air temperature (
TOut_min=16°C,\nTOut_max=21°C) used to reset the occupied mode TSupSet\nwas chosen to maximize economizer hours. It may be preferable to use a lower\nrange of outdoor air temperature (e.g. TOut_min=13°C,\nTOut_max=18°C) to minimize fan energy.\n \n
\n\nDuring occupied and Setup modes (uOpeMod=1, uOpeMod=2)
\n\nThe TSupSet shall be reset from TSupCoo_min when the outdoor\nair temperature is TOut_max and above, proportionally up to\nmaximum supply temperature when the outdoor air temperature is TOut_min and\nbelow. The maximum supply temperature shall be reset using trim and respond logic between\nTSupCoo_min and TSupCoo_max. Parameters suggested for the\ntrim and respond logic are shown in the table below. They require adjustment\nduring the commissioning and tuning phase.\n
\n\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | TSupCoo_min | Minimum setpoint |
\n| SPmax | TSupCoo_max | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | uZonTemResReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n
\n\n\n![\\\"Image]()
\n
\n\nDuring Cool-down modes (uOpeMod=3)
\n\nSupply air temperature setpoint TSupSet shall be TSupCoo_min.\n
\nDuring Setback and Warmup modes (uOpeMod=4, uOpeMod=5)
\n\nSupply air temperature setpoint TSupSet shall be TSupWarUpSetBac.\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature"
- },
- {
- "instance": {
- "name": "ashOutAirSet",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "venStd"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Outdoor airflow related calculations at the AHU level",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis sequence outputs AHU level uncorrected minimum outdoor airflow rate\nVUncOutAir_flow and effective minimum outdoor airflow rate\nVEffOutAir_flow when complying with ASHRAE Standard 62.1 ventilation requirements.\nIt is implemented according to Section 5.16.3.1 of ASHRAE\nGuideline G36, May 2020.\n
\n\nIt requires following inputs which are sum or maximum of the outputs from\nthe zone level calculation. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.SumZone\nfor these inputs.\n
\n\n- \nSum of the adjusted population component breathing zone flow rate for all zones that are in\nall zone groups in occupied mode,
VSumAdjPopBreZon_flow.\n \n- \nSum of the adjusted area component breathing zone flow rate for all zones that are in\nall zone groups in occupied mode,
VSumAdjAreBreZon_flow.\n \n- \nSum of the zone primary airflow rates for all zones in all zone groups that are\nin occupied mode,
VSumZonPri_flow.\n \n- \nMaximum zone outdoor air fraction for all zones in all zone groups that are\nin occupied mode,
uOutAirFra_max.\n \n
\n\nThe calculation is done using the steps below.\n
\n\n- \nSee Section 3.1.4.2.a of Guideline 36 for setpoints
VUncDesOutAir_flow\nand VDesTotOutAir_flow.\n \n- \nThe uncorrected outdoor airflow rate setpoint
VUncOutAir_flow is recalculated\ncontinuously based on the adjusted population and area component breathing zone flow rate\nof the zones being served determined in accordance with Section 5.2.1.3. See\n\nBuildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints.\n\n VUncOutAir_flow = min(VUncDesOutAir_flow, (VSumAdjPopBreZon_flow + VSumAdjAreBreZon_flow))\n
\n \n- \nCalculate the current system ventilation efficiency as\n
\n sysVenEff = 1 + (VUncOutAir_flow/VSumZonPri_flow) - uOutAirFra_max\n
\n \n- \nCalculate the effective minimum outdoor air setpoint
VEffOutAir_flow as\nthe uncorrected outdoor air intake divided by the system ventilation efficiency,\nbut no larger than the design total outdoor airflow rate VDesTotOutAir_flow:\n\n VEffOutAir_flow = min(VUncOutAir_flow/sysVenEff, VDesTotOutAir_flow)\n
\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.AHU"
- },
- {
- "instance": {
- "name": "relDam",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "buiPreCon"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReliefDamper"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Relief damper control for AHUs using actuated dampers without fan",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nSequence for controlling actuated relief damper yRelDam for AHUs using\nactuated relief damper without a fan.\nIt is implemented according to Section 5.16.8 of ASHRAE Guideline G36, May 2020.\n
\n\n- \nRelief dampers shall be enabled when the associated supply fan is proven on\n(
u1SupFan = true), and disabled otherwise.\n \n- \nWhen enabled, use a P-only control loop to modulate relief dampers to maintain building\nstatic pressure
dpBui at its setpoint, which is by defaul\n12 Pa (0.05 inchWC).\n \n- \nClose damper when disabled.\n
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefDamper"
- },
- {
- "instance": {
- "name": "retFanDpCon",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "buiPreCon"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReturnFanDp"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Return fan control with direct building pressure control",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nSetpoint for return fan discharge pressure and relief air damper\nfor a multi zone VAV AHU according to Section 5.16.10 of ASHRAE Guideline G36, May 2020.\n
\n\nNote that this sequence assumes that the AHU units with return fan having the\nreturn fan with direct building pressure control have the minimum outdoor air damper.\n
\n\n- \n
Return fan operates whenever associated supply fan is proven on and is\noff otherwise.
\n \n- \n
Return fan is controlled to maintain return fan discharge static pressure\nat setpoint dpBuiSet.
\n \n- \n
Relief damper is only enabled when the associated supply and return\nfans are proven on (u1SupFan=true) and the minimum outdoor air damper is open\n(to be controlled in a separate sequence).\nThe relief dampers is closed when the fan is disabled.
\n \n- \n
The building static pressure is time averaged with a sliding 5-minute window\nto dampen fluctuations. The averaged value shall be displayed and is used\nfor control.
\n \n- \n
When the relief damper is enabled, a control loop modulates the relief damper\nin sequence with the return fan static pressure setpoint as shown in the figure\nbelow to maintain the building pressure equal to dpBuiSet,\nwhich is by default 12 Pa (0.05 inches).\n
\n \n
\n\nThe output signal of the building pressure control is as follows:\n
\n\n- \nFrom 0 to 0.5, the building pressure control loop modulates the exhaust\ndampers from
yRelDam = 0 (closed) to yRelDam = 1 (open).\n \n- \nFrom 0.5 to 1, the building pressure control loop resets the return fan\ndischarge static pressure setpoint from
p_rel_RetFan_min\nto p_rel_RetFan_max. The p_rel_RetFan_min and\np_rel_RetFan_max are specified in Section 3.2.1.4.\n \n
\n\n![\\\"Image]()
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanDirectPressure"
- },
- {
- "instance": {
- "name": "retFanAirTra",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "buiPreCon"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReturnFanMeasuredAir"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Return fan control for AHUs using return fan with airflow tracking",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nSequence for controlling return fan yRetFan for AHUs using return fan\nwith airflow tracking.\nIt is implemented according to Section 5.16.11 of ASHRAE Guideline G36, May 2020.\n
\n\n- \nReturn fan operates whenever associated supply fan is proven on\n(
u1SupFan = true).\n \n- \nReturn fan speed shall be controlled to maintain return airflow equal to supply\nairflow less differential
difFloSet, as determined per section 3.2.1.5.\n \n- \nRelief or exhaust dampers shall be enabled when the associated supply and return\nfans are proven on and closed otherwise. Exhaust dampers shall modulate as the inverse\nof the return air damper per section 5.16.2.3. This is implemented in\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.ReturnFan\n
\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanAirflowTracking"
- },
- {
- "instance": {
- "name": "tit24OutAirSet",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "venStd"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "AHU level setpoint calculation",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nThis sequence outputs AHU level effective outdoor air absolute minimum and design\nminimum setpoints VEffAbsOutAir_flow, VEffDesOutAir_flow and\nthe nomalized minimum setpoint effOutAir_normalized\nwhen complying with California Title 24 ventilation requirements.\nIt is implemented according to Section 5.16.3.2 of ASHRAE\nGuideline G36, May 2020.\n
\n\nIt calculates as below:\n
\n\n- \nSee the sum of zone absolute and design minimum outdoor airflow setpoint\n
VSumZonAbsMin_flow and VSumZonDesMin_flow from\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.SumZone for the detailed\ndescription.\n \n- \nEffective outdoor air absolute minimum and design minimum setpoints\n(
VEffAbsOutAir_flow and VEffDesOutAir_flow) are recalculated\ncontinuously based on the mode of the zones being served.\n\n- \nEffective outdoor air absolute minimum setpoint
VEffAbsOutAir_flow is\nthe sum of VZonAbsMin_flow for all zones in all zone groups that\nare in occupied mode but shall be no larger than the absolute minimum outdoor airflow\nVAbsOutAir_flow.\n \n- \nEffective outdoor air design minimum setpoint
VEffDesOutAir_flow is\nthe sum of VZonDesMin_flow for all zones in all zone groups that\nare in occupied mode but shall be no larger than the absolute minimum outdoor airflow\nVDesOutAir_flow.\n \n
\n \n- \nAccording to section 5.16.4, 5.16.5 and 5.16.6, the effective minimum outdoor airflow\nsetpoint should be reset based on the highest zone CO2 control- loop signal from\n
VEffAbsOutAir_flow at 50% signal to VEffDesOutAir_flow\nat 100% signal. When there is no CO2 sensor in any zone, the effective minimum\noutdoor airflow setpoint should be equal to the VEffDesOutAir_flow.\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.AHU"
- },
- {
- "instance": {
- "name": "relFanCon",
- "protected": false,
- "condition": {
- "simple_expression": {
- "logical_expression": {
- "logical_or": [
- {
- "logical_and": [
- {
- "arithmetic_expressions": [
- {
- "name": "buiPreCon"
- },
- {
- "name": "Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReliefFan"
- }
- ],
- "relation_operator": "=="
- }
- ]
- }
- ]
- }
- }
- },
- "cdlAnnotation": null
- },
- "descriptionString": "Sequence for control of relief fan in AHU",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nSequence for controling relief fan that is part of AHU. It is developed based on\nSection 5.16.9 of ASHRAE Guideline 36, May 2020, with the modification to accommodate\nthe single relief fan control.\n
\n\n- \nThe relief fan shall be enabled when the AHU supply fan is proven ON\n(
u1SupFan=true), and shall be disabled otherwise.\n \n- \nBuilding static pressure (
dpBui) shall be time averaged with a sliding\n5-minute window and 15 second sampling rate (to dampen fluctuations). The average\nvalue shall be that displayed and used for control.\n \n- \nA P-only control loop maintains the building pressure at a set point (
dpBuiSet)\nof 12 Pa (0.05 in. of water) with an output ranging from 0% to 100%. The loop is disabled\nand output set to zero when the relief fan is disabled.\n \n- \nFan speed shall be equal to the PID signal but no less than the minimum speed.\n
\n- \nWhen relief system is enabled, and the control loop\noutput is above 5%, open the motorized dampers to the relief fans;\nclose the dampers when the loop output drops to 0% for 5 minutes.\n
\n- \nWhen the control loop output is above minimum speed (
relFanSpe_min) plus 15%\nby 7 minutes, start the relief fan.\n \n- \nWhen the control loop output is below minimum speed (
relFanSpe_min)\nby 5 minutes, shut off the relief fan.\n \n
\n \n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefFan"
- },
- {
- "descriptionString": "Multizone VAV air handling unit controller",
- "classCdlAnnotation": null,
- "classDocInfo": "\"\n\nBlock that is applied for multizone VAV AHU control. It outputs the supply fan status\nand the operation speed, outdoor and return air damper position, supply air\ntemperature setpoint and the valve position of the cooling and heating coils.\nIt is implemented according to the Section 5.16 of ASHRAE Guideline 36, May 2020.\n
\n\nThe sequence consists of eight types of subsequences.\n
\nSupply fan speed control
\n\nThe fan speed control is implemented according to Section 5.16.1. It outputs\nthe boolean signal y1SupFan to turn on or off the supply fan.\nIn addition, based on the pressure reset request uZonPreResReq\nfrom the VAV zones controller, the\nsequence resets the duct pressure setpoint, and uses this setpoint\nto modulate the fan speed ySupFanSpe using a PI controller.\nSee\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan\nfor more detailed description.\n
\nMinimum outdoor airflow setting
\n\nAccording to current occupany, supply operation status ySupFan,\nzone temperatures and the discharge air temperature, the sequence computes the\nminimum outdoor airflow rate setpoint, which is used as input for the economizer control.\nMore detailed information can be found in\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.\n
\nEconomizer control
\n\nThe block outputs outdoor and return air damper position, yOutDamPos and\nyRetDamPos. First, it computes the position limits to satisfy the minimum\noutdoor airflow requirement. Second, it determines the availability of the economizer based\non the outdoor condition. The dampers are modulated to track the supply air temperature\nloop signal, which is calculated from the sequence below, subject to the minimum outdoor airflow\nrequirement and economizer availability.\nSee\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller\nfor more detailed description.\n
\nSupply air temperature setpoint
\n\nBased on the Section 5.16.2, the sequence first sets the maximum supply air temperature\nbased on reset requests collected from each zone uZonTemResReq. The\noutdoor temperature TOut and operation mode uOpeMod are used\nalong with the maximum supply air temperature, for computing the supply air temperature\nsetpoint. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature\nfor more detailed description.\n
\nCoil valve control
\n\nThe subsequence retrieves supply air temperature setpoint from previous sequence.\nAlong with the measured supply air temperature and the supply fan status, it\ngenerates coil valve positions. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals\nfor more detailed description.\n
\nFreeze protection
\n\nBased on the Section 5.16.12, the sequence enables freeze protection if the\nmeasured supply air temperature belows certain thresholds. There are three\nprotection stages. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection\nfor more detailed description.\n
\nBuilding pressure control
\n\nBy selecting different building pressure control designs, which includes using actuated\nrelief damper without fan, using actuated relief dampers with relief fan, using\nreturn fan with direct building pressure control, or using return fan with airflow\ntracking control, the sequences controls relief fans, relief dampers and return fans.\nSee belows sequences for more detailed description:\n
\n\nPlant request
\n\nAccording to the Section 5.16.16, the sequence send out heating or cooling plant requests\nif the supply air temperature is below or above threshold value, or the heating or\ncooling valves have been widely open for certain times. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests\nfor more detailed description.\n
\n\"",
- "fullClassName": "Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Controller"
- }
- ]
-}
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It is developed based on Section\n5.16.12 of ASHRAE Guideline 36, May 2020.\n
\n\n- \nIf the supply air temperature
TAirSup drops below 4.4 °C (40 °F)\nfor 5 minutes, send two (or more, as required to ensure that heating plant is active,\nminHotWatReq) heating hot-water plant requests, override the outdoor\nair damper to the minimum position, and modulate the heating coil to maintain a suppy\nair temperature of at least 6 °C (42 °F).\nDisable this function when supply air temperature rises above 7 °C (45 °F) for\n5 minutes.\n \n- \nIf the supply air temperature
TAirSup drops below 3.3 °C (38 °F)\nfor 5 minutes, fully close both the economizer damper and the minimum outdoor air\ndamper for 1 hour and set a Level 3 alarm noting that minimum ventilation was\ninterrupted. After 1 hour, the unit shall resume minimum outdoor air ventilation\nand enter the previous stage of freeze protection.\n\n- \nIf it is warm enough that the supply air temperature rises above 7 °C (45 °F)\nwith minimum ventilation, the unit will remain in Stage 1 freeze protection for 5\nminutes then resume normal operation.\n
\n
\n \n- \nUpon signal from the freeze-stat (if installed),\nor if supply air temperature drops below 3.3 °C (38 °F) for 15 minutes or\nbelow 1 °C (34 °F) for 5 minutes, shut down supply and return (or relief)\nfan(s), close outdoor air damper, open the cooling-coil valve to 100%, and energize\nthe CHW pump system. Also send two (or more, as required to ensure that heating plant\nis active,
minHotWatReq) heating hot-water plant requests,\nmodulate the heating coil to maintain the higher of the supply air temperature or\nthe mixed air temperature at 27 °C (80 °F), and set a Level 2 alarm indicating\nthe unit is shut down by freeze protection.\n\n- \nIf a freeze-protection shutdown is triggered by a low air temperature sensor reading,\nit shall remain in effect until it is reset by a software switch from the operator's\nworkstation. (If a freeze-stat with a physical reset switch is used instead, there\nshall be no software reset switch.)\n
\n
\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection"},{"instance":{"name":"plaReq","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Output plant requests for multizone air handling unit","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis sequence outputs the system reset requests for multiple zone air handling unit. The\nimplementation is according to the Section 5.16.16 of ASHRAE Guideline 36, May 2020. \n
\nChilled water reset request yChiWatResReq
\n\n- \nIf the supply air temperature
TAirSup exceeds the supply air temperature\nset point TAirSupSet by 3 °C (5 °F) for 2 minutes, send 3 requests.\n \n- \nIf the supply air temperature
TAirSup exceeds the supply air temperature\nset point TAirSupSet by 2 °C (3 °F) for 2 minutes, send 2 requests.\n \n- \nElse if the chilled water valve position
uCooCoiSet is greater than\n95%, send 1 request until the uCooCoiSet is less than 85%.\n \n- \nElse if the chilled water valve position
uCooCoiSet is less than 95%,\nsend 0 request.\n \n
\nChiller plant request yChiPlaReq
\n\nSend the chiller plant that serves the system a chiller plant request as follows:\n
\n\n- \nIf the chilled water valve position
uCooCoiSet is greater than\n95%, send 1 request until the uCooCoiSet is less than 10%.\n \n- \nElse if the chilled water valve position
uCooCoiSet is less than 95%,\nsend 0 request.\n \n
\nIf there is a hot-water coil, hot-water\nreset requests yHotWatResReq
\n\n- \nIf the supply air temperature
TAirSup is 17 °C (30 °F) less than\nthe supply air temperature set point TAirSupSet for 5 minutes, send 3\nrequests.\n \n- \nElse if the supply air temperature
TAirSup is 8 °C (15 °F) less than\nthe supply air temperature set point TAirSupSet for 5 minutes, send 2\nrequests.\n \n- \nElse if the hot water valve position
uHeaCoiSet is greater than\n95%, send 1 request until the uHeaCoiSet is less than 85%.\n \n- \nElse if the hot water valve position
uHeaCoiSet is less than 95%,\nsend 0 request.\n \n
\nIf there is a hot-water coil and heating hot-water plant, heating hot-water\nplant reqeusts yHotWatPlaReq
\n\nSend the heating hot-water plant that serves the air handling unit a heating hot-water\nplant request as follows:\n
\n\n- \nIf the hot water valve position
uHeaCoiSet is greater than 95%, send 1\nrequest until the hot water valve position is less than 10%.\n \n- \nIf the hot water valve position
uHeaCoiSet is less than 95%, send 0 requests.\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests"},{"instance":{"name":"ecoCon.sepAFMS","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"minOADes"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and airflow measurement","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and airflow measurement.\nIt is implemented according to Section 5.16.5 of the ASHRAE Guideline 36, May 2020.\n
\nMinimum outdoor air set point
\n\nCalculate the outdoor air set point with\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.\n
\nMinimum outdoor air control loop
\n\nMinimum outdoor air control loop is enabled when the supply fan is proven ON\n(u1SupFan=true) and in occupied mode, and disabled and output set to\nzero otherwise\n
\n\nThe minimum outdoor airflow rate shall be maintained at the minimum outdoor air\nset point by a reverse-acting control loop whose output is 0% to 100%.\nFrom 0% to 50% loop output, the minimum outdoor air damper is opened from 0%\n(minOutDamPhy_min) to 100% (minOutDamPhy_max).\n
\nReturn air damper
\n\n- \nReturn air damper minimum outdoor air control is enabled when the minimum outdoor\nair damper is fully open and the economizer outdoor air damper is less than a projected\nposition limit, which is 5% when supply fan speed is at 100% design speed proportionally\nup to 80% when the fan is at minimum speed.\n
\n- \nReturn air damper minimum outdoor air control is disabled when the minimum outdoor\nair damper is not fully open or the economizer outdoor air damper is 10% above the projected\nposition limit as determined above.\n
\n- \nWhen enabled, the maximum return air damper set point is reduced from 100%\n(
retDamPhy_max) to 0% (retDamPhy_min)\nas the minimum outdoor air loop output rises from 50% to 100%.\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.SeparateWithAFMS"},{"instance":{"name":"ecoCon.sepDp","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"minOADes"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersPressure"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Outdoor air and return air damper position limits for units with separated minimum outdoor air damper and differential pressure control","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock that outputs the position limits of the return and outdoor air damper for units\nwith a separated minimum outdoor air damper and differential pressure control.\nIt is implemented according to Section 5.16.4 of the ASHRAE Guideline 36, May 2020.\n
\nDifferential pressure setpoint across the minimum outdoor air damper
\n\nOpen minimum outdoor air damper
\n\nOpen minimum outdoor air damper when the supply air fan is proven ON and the system\nis in occupied mode and the minimum differential pressure set point is greater\nthan zero. Damper shall be closed otherwise.\n
\nReturn air damper
\n\n- \nReturn air damper minimum outdoor air control is enabled when the minimum outdoor\nair damper is open and the economizer outdoor air damper is less than a projected\nposition limit, which is 5% when supply fan speed is at 100% design speed proportionally\nup to 80% when the fan is at minimum speed.\n
\n- \nReturn air damper minimum outdoor air control is disabled when the minimum outdoor\nair damper is closed or the economizer outdoor air damper is 10% above the projected\nposition limit as determined above.\n
\n- \nWhen enabled, the maximum return air damper set point is modulated from 100% to 0%\nto maintain the differential pressure across the minimum outdoor air damper at set\npoint.\n
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.SeparateWithDP"},{"instance":{"name":"ecoCon.damLim","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"minOADes"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.SingleDamper"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Outdoor air and return air damper position limits for units with common damper","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis block models the multi zone VAV AHU minimum outdoor air control with a single\ncommon damper for minimum outdoor air and economizer functions based on outdoor airflow\nmeasurement, designed in line with the Section 5.16.6 of the ASHRAE Guideline 36, May 2020.\n
\n\nThe controller is enabled when the supply fan is proven on (u1SupFan=true) and\nthe AHU operation mode \nBuildings.Controls.OBC.ASHRAE.G36.Types.OperationModes equals occupied.\nOtherwise the damper position limits are set to their corresponding maximum and minimum physical or at\ncommissioning fixed limits. The state machine chart below illustrates listed conditions:\n
\n\n![\\\"Image]()
\n
\n\nThe controller sets the outdoor and return damper position limits so\nthat the outdoor airflow rate VOut_flow stays equal or above the\nminimum outdoor air setpoint VOutMinSet_flow. The fraction of the controller\noutput signal between yMin and uRetDam_min is\nlinearly mapped to the outdoor air damper minimal position yOutDam_min\nwhile the fraction of the controller output between uRetDam_min and\nyMax is linearly mapped to the return air damper maximum position\nyRetDam_max. Thus the dampers are not interlocked.\n
\n\nThe following control charts show the input/output structure and an expected damper position\nlimits for a well configured controller.\n
\n\n![\\\"Image]()
\n
\n\nThe expected damper position limits vs. the control loop signal are as follows:\n
\n\n![\\\"Image]()
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.Common"},{"instance":{"name":"ecoCon.enaDis","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Multi zone VAV AHU economizer enable/disable switch","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis is a multi zone VAV AHU economizer enable/disable sequence\nbased on the Section 5.16.7 of the ASHRAE Guideline 36, May 2020. Additional\nconditions included in the sequence are: freeze protection (freeze protection\nstage 0-3, see Section 5.16.12), supply fan status (on or off, see Section 5.16.5).\n
\n\nThe economizer is disabled whenever the outdoor air conditions\nexceed the economizer high limit setpoint.\nThis sequence allows for all device types listed in\nASHRAE 90.1-2013 and Title 24-2013.\n
\n\nIn addition, the economizer gets disabled without a delay whenever any of the\nfollowing is true:\n
\n\n\nThe following state machine chart illustrates the transitions between enabling and disabling:\n
\n\n![\\\"Image]()
\n
\n\nAfter the disable signal is activated, the following procedure is applied, in order to\nprevent pressure fluctuations in the HVAC system:\n
\n\n- \nThe return damper gets fully opened (
yRetDam_max = uRetDamPhy_max and\nyRetDam_min = uRetDamPhy_max) for retDamFulOpeTim\ntime period, after which the return damper gets released to its minimum outdoor airflow control position\n(yRetDam_max = uRetDam_max and yRetDam_min = uRetDam_max).\n \n- \nThe outdoor air damper is closed to its minimum outoor airflow control limit (
yOutDam_max = uOutDam_min)\nafter a disDel time delay.\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Enable"},{"instance":{"name":"ecoCon.modRet","protected":false,"condition":{"simple_expression":"([object Object])"},"cdlAnnotation":null},"descriptionString":"Modulates dampers of economizer in buildings using return fan to control the pressure","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock modulates the damper of economizers of buildings with pressure controlled by\nreturn fan and airflow tracking. It is implemented according to Section 5.16.2.3.d,\nFigure 5.16.2.3-2 and Figure 5.16.2.3-3 of ASHRAE Guideline 36, May 2020.\n
\n\nReturn air damper position limits, which are the inputs to the sequence, are the outputs of\nsequences in package\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Limits.\nIt also requires input uTSup from\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals\nsequences.\n
\n\nThe time rate of change of the damper signals is limited by a first order hold,\nusing the sample time samplePeriod.\nThis prevents a quick opening of the outdoor air damper, for example when the\noutdoor airflow setpoint has a step change.\nSlowing down the opening of the outdoor air damper allows the freeze protection\nto componensate with its dynamics that is faster than the opening of the outdoor air damper.\nTo avoid that all dampers are closed, the return air damper has the same\ntime rate of change limitation.\n
\n\nThe modulation is shown as the control chart:\n
\n
\n\n![\\\"Image]()
\n
\n\nNote in the above chart, if the building has direct pressure control\n(have_dirCon), the profile for relief air damper control should\nbe ignored.\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.ReturnFan"},{"instance":{"name":"ecoCon.modRel","protected":false,"condition":{"simple_expression":"([object Object])"},"cdlAnnotation":null},"descriptionString":"Modulates dampers of economizer in buildings using relief damper or fan to control the pressure","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis is a multi zone VAV AHU economizer modulation block. It calculates\nthe outdoor and return air damper positions based on the supply air temperature\ncontrol loop signal. It is implemented according to Section 5.16.2.3.d,\nFigure 5.16.2.3-1 of ASHRAE Guideline 36, May 2020.\nDamper positions are linearly mapped to\nthe supply air control loop signal.\n
\n\nWhen the economizer is enabled, the PI controller modulates the damper\npositions. Return and outdoor damper are not interlocked. When the economizer is disabled,\nthe damper positions are set to the minimum outdoor air damper position limits.\n
\n\nThe control charts below show the input-output structure and an economizer damper\nmodulation sequence assuming a well configured controller. Control diagram:\n
\n\n![\\\"Image]()
\n
\n\nMulti zone AHU economizer modulation control chart:\n
\n
\n\n![\\\"Image]()
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.Reliefs"},{"instance":{"name":"ecoCon.ecoHigLim","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Specify the economizer high liimits","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis block outputs the air economizer high limits according to the energy standard,\ndevice type and climate zone. The implementation is according to the Section 5.1.17 of ASHRAE\nGuideline 36, May 2020.\n
\nWhen ASHRAE 90.1-2016 is used.
\n\n| Device type | Allowed only in these ASHRAE Climate Zones | Required High Limit (Economizer OFF when) |
|---|
\n\n| Fixed dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 | \noutdoor air temperature is higher than 24 °C (TCut=24°C) | \n
\n\n| 5a, 6a | outdoor air temperature is higher than 21 °C (TCut=21°C) | \n
\n\n| 1a, 2a, 3a, 4a | outdoor air temperature is higher than 18 °C (TCut=18°C) | \n
\n\n| Differential dry bulb | 1b, 2b, 3b, 3c, 4b, 4c, 5a, 5b, 5c, 6a, 6b, 7, 8 | \noutdoor air temperature is higher than the return air temperature (TCut=TRet) | \n
\n\n| Fixed enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) | \n
\n\n| Differential enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the outdoor air enthalpy is higher than the return air enthalpy (TCut=24°C or hCut=hRet) | \n
\n\n| Fixed dry bulb with differential dry bulb | \n1b, 2b, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7, 8 | \noutdoor air temperature is higher than 24 °C or the return air temperature (TCut=min(24°C, TRet)) | \n
\n\n| 5a, 6a | \noutdoor air temperature is higher than 21 °C or the return air temperature (TCut=min(21°C, TRet)) | \n
\n
\nWhen California Title 24-2016 is used.
\n\n| Device type | California Climate Zones | Required High Limit (Economizer OFF when) |
|---|
\n\n| Fixed dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than 24 °C (TCut=24°C) | \n
\n\n| 2, 4, 10 | outdoor air temperature is higher than 23 °C (TCut=23°C) | \n
\n\n| 6, 8, 9 | outdoor air temperature is higher than 22 °C (TCut=22°C) | \n
\n\n| 7 | outdoor air temperature is higher than 21 °C (TCut=21°C) | \n
\n\n| Differential dry bulb | 1, 3, 5, 11 to 16 | outdoor air temperature is higher than the return air temperature (TCut=TRet) | \n
\n\n| 2, 4, 10 | outdoor air temperature is higher than the return air temperature minus 1 °C (TCut=TRet-1°C) | \n
\n\n| 6, 8, 9 | outdoor air temperature is higher than the return air temperature minus 2 °C (TCut=TRet-2°C) | \n
\n\n| 7 | outdoor air temperature is higher than the return air temperature minus 3 °C (TCut=TRet-3°C) | \n
\n\n| Fixed enthalpy with fixed dry bulb | All | \noutdoor air temperature is higher than 24 °C or the enthalpy is higher than 66 kJ/kg (TCut=24°C or hCut=66kJ/kg) | \n
\n\n| Fixed dry bulb with differential dry bulb | 1, 3, 5, 11 to 16 | \noutdoor air temperature is higher than 24 °C or the return air temperature (TCut=24°C or TCut=TRet) | \n
\n\n| 2, 4, 10 | \noutdoor air temperature is higher than 23 °C or the return air temperature minus 1 °C (TCut=min(23°C, TRet-1°C)) | \n
\n\n| 6, 8, 9 | \noutdoor air temperature is higher than 22 °C or the return air temperature minus 2 °C (TCut=min(22°C, TRet-2°C)) | \n
\n\n| 7 | \noutdoor air temperature is higher than 21 °C or the return air temperature minus 3 °C (TCut=min(21°C, TRet-3°C)) | \n
\n
\n
\n\nNote that the device type Fixed dry bulb with differential dry bulb is not listed in either ASHRAE 90.1 or Title 24 standard.\nBut it is possible to use in practice. See Section 3.1.6.2 in Guideline 36.\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.Generic.AirEconomizerHighLimits"},{"instance":{"name":"ecoCon","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Multi zone VAV AHU economizer control sequence","classCdlAnnotation":null,"classDocInfo":"\"\n\nMulti zone VAV AHU economizer control sequence that calculates\noutdoor and return air damper positions based on ASHRAE\nGuidline 36, May 2020, Sections: 5.16.2.3,5.16.4, 5.16.5, 5.16.6, 5.16.7.\n
\n\nThe sequence consists of three sets of subsequences.\n
\n\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller"},{"instance":{"name":"conSupFan.staPreSetRes","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Block to inplement trim and respond logic","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis block implements the trim and respond logic according to Section 5.1.14.3 \nand 5.1.14.4 of ASHRAE Guideline 36, May 2020.\n
\n\nFor each upstream system or plant set point being controlled by a trim and respond\nloop, define the initial values in system or plant sequences. Values for trim,\nrespond, time step, etc. shall be tuned to provide stable control.\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | numOfReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n\nThe trim and respond logic shall reset setpoint within the range minSet to\nmaxSet.\nWhen the associated device is off (uDevSta=false), the setpoint\nshall be iniSet.\nThe reset logic shall be active while the associated device is proven\non (uDevSta=true), starting delTim after initial\ndevice start command.\nWhen active, every time step samplePeriod, trim the setpoint by\ntriAmo.\nIf there are more than numIgnReq requests, respond by changing\nthe setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of\nrequests minus the number of ignored requests, but no more than maxRes.\n
\n\nIn other words, every time step samplePeriod:\n
\n\n- Change setpoint by
triAmo; \n- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq\n-numIgnReq) but no more than maxRes.\n \n
\nHold and release loop output
\n\nOptionally, if the parameter have_hol is set to true, an additional\ninput signal uHol allows for holding the trim and respond loop output\nat a fixed value for the longer of the time the input uHol remains true \nand the duration specified by the parameter dtHol.\nWhen uHol switches back to false, the hold is released and resetting\ncontinues from the previously held value (without reinitializing to iniSet\nor going through a delay time of delTim). \n
\n\nThis is typically used in control sequences to freeze the reset logic during the plant\nstaging process.\nConsider for example the following specification:
\n\\\"When a plant stage change is initiated, the reset logic shall be disabled and value\nfixed at its last value for the longer of 15 minutes and the time it takes \nfor the plant to successfully stage.\\\"
\nUsing this block with have_hol=true and dtHol=15*60 \nyields the following sequence of events.\n
\n\n- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
\n- 0:12 - Stage change is completed. T&R loop output remains at 50 % \nsince < 15 minutes have elapsed.
\n- 0:15 - T&R is released and continues resetting from 50 %.
\n
\nExamples
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\ncomparing scenarios with and without holding the loop output.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a positive trim amount.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\nin a scenario where the equipment switches on and off.\n
\n\n![\\\"Trend]()
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.Generic.TrimAndRespond"},{"instance":{"name":"conSupFan","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Block to control multi zone VAV AHU supply fan","classCdlAnnotation":null,"classDocInfo":"\"\n\nSupply fan control for a multi zone VAV AHU according to Section 5.16.1 of \nASHRAE Guideline G36, May 2020.\n
\nSupply fan start/stop
\n\n- Supply fan shall run when system is in the Cool-down, Setup, or Occupied mode
\n- If there are any VAV-reheat boxes on perimeter zones, supply fan shall also\nrun when system is in Setback or Warmup mode
\n
\nStatic pressure setpoint reset
\n\nStatic pressure setpoint shall be reset using trim-respond logic using following\nparameters as a starting point:\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | uZonPreResReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n
\nStatic pressure control
\n\nSupply fan speed is controlled with a PI controller to maintain duct static pressure at setpoint\nwhen the fan is proven on. The setpoint for the PI controller and the measured\nduct static pressure are normalized with the maximum design static presssure\nmaxSet.\nWhere the zone groups served by the system are small,\nprovide multiple sets of gains that are used in the control loop as a function\nof a load indicator (such as supply fan airflow rate, the area of the zone groups\nthat are occupied, etc.).\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan"},{"instance":{"name":"supSig","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Multizone VAV AHU supply air temperature control loop and coil valves position","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock that outputs the supply temperature control loop signal,\nand the coil valve postions for VAV system with multiple zones,\nimplemented according to Section 5.16.2.3 of the ASHRAE Guideline G36, May 2020.\n
\n\nThe supply air temperature control loop signal uTSup\nis computed using a PI controller that tracks the supply air temperature\nsetpoint TSupSet.\nIf the fan is off, then uTSup = 0.\n
\n\nHeating valve control signal (or modulating electric heating\ncoil if applicable) yHeaCoi and cooling valve control signal yCooCoi\nare sequenced based on the supply air temperature control loop signal uTSup.\nFrom uTSup = uHea_max to uTSup = -1,\nyHeaCoi increases linearly from 0 to 1.\nSimilarly, uTSup = uCoo_min to uTSup = +1,\nyCooCoi increases linearly from 0 to 1.\n
\n\n\n![\\\"Image]()
\n
\n\n\nThe output uTSup can be used in a controller for the economizer.\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals"},{"instance":{"name":"conTSupSet.maxSupTemRes","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Block to inplement trim and respond logic","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis block implements the trim and respond logic according to Section 5.1.14.3 \nand 5.1.14.4 of ASHRAE Guideline 36, May 2020.\n
\n\nFor each upstream system or plant set point being controlled by a trim and respond\nloop, define the initial values in system or plant sequences. Values for trim,\nrespond, time step, etc. shall be tuned to provide stable control.\n
\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | minSet | Minimum setpoint |
\n| SPmax | maxSet | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | numOfReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n\nThe trim and respond logic shall reset setpoint within the range minSet to\nmaxSet.\nWhen the associated device is off (uDevSta=false), the setpoint\nshall be iniSet.\nThe reset logic shall be active while the associated device is proven\non (uDevSta=true), starting delTim after initial\ndevice start command.\nWhen active, every time step samplePeriod, trim the setpoint by\ntriAmo.\nIf there are more than numIgnReq requests, respond by changing\nthe setpoint by resAmo*(numOfReq-numIgnReq), i.e., the number of\nrequests minus the number of ignored requests, but no more than maxRes.\n
\n\nIn other words, every time step samplePeriod:\n
\n\n- Change setpoint by
triAmo; \n- If
numOfReq > numIgnReq, also change setpoint by resAmo*(numOfReq\n-numIgnReq) but no more than maxRes.\n \n
\nHold and release loop output
\n\nOptionally, if the parameter have_hol is set to true, an additional\ninput signal uHol allows for holding the trim and respond loop output\nat a fixed value for the longer of the time the input uHol remains true \nand the duration specified by the parameter dtHol.\nWhen uHol switches back to false, the hold is released and resetting\ncontinues from the previously held value (without reinitializing to iniSet\nor going through a delay time of delTim). \n
\n\nThis is typically used in control sequences to freeze the reset logic during the plant\nstaging process.\nConsider for example the following specification:
\n\\\"When a plant stage change is initiated, the reset logic shall be disabled and value\nfixed at its last value for the longer of 15 minutes and the time it takes \nfor the plant to successfully stage.\\\"
\nUsing this block with have_hol=true and dtHol=15*60 \nyields the following sequence of events.\n
\n\n- 0:00 - Stage change is initiated. T&R loop output is at 50 %.
\n- 0:12 - Stage change is completed. T&R loop output remains at 50 % \nsince < 15 minutes have elapsed.
\n- 0:15 - T&R is released and continues resetting from 50 %.
\n
\nExamples
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\ncomparing scenarios with and without holding the loop output.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a positive trim amount.\n
\n\n![\\\"Trend]()
\n
\n\nThe figure below illustrates the trim and respond logic with a negative trim amount,\nin a scenario where the equipment switches on and off.\n
\n\n![\\\"Trend]()
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.Generic.TrimAndRespond"},{"instance":{"name":"conTSupSet","protected":false,"condition":null,"cdlAnnotation":null},"descriptionString":"Supply air temperature setpoint for multi zone system","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock that outputs the supply air temperature setpoint and the coil valve control\ninputs for VAV system with multiple zones, implemented according to Section 5.16.2 of\nthe ASHRAE Guideline G36, May 2020.\n
\n\nThe control loop is enabled when the supply air fan u1SupFan is proven on,\nand disabled and the output set to deadband (no heating, minimum economizer) otherwise.\n
\n The supply air temperature setpoint is computed as follows.
\n\nSetpoints for TSupCoo_min, TSupCoo_max,\nTOut_min, TOut_max\n
\n\nPer Section 3.1.4.1, the setpoints are design information.\n
\n\n- \nThe
TSupCoo_min should be set no lower than the design coil leaving air\ntemperature to prevent excessive chilled water temperature reset requests.\n \n- \nThe
TSupCoo_max is typically 18 °C (65 °F) in mild and dry climates\nand 16 °C (60 °F) or lower in humid climates. It should not typically be\ngreater than 18 °C (65 °F).\n \n- \nThe default range of outdoor air temperature (
TOut_min=16°C,\nTOut_max=21°C) used to reset the occupied mode TSupSet\nwas chosen to maximize economizer hours. It may be preferable to use a lower\nrange of outdoor air temperature (e.g. TOut_min=13°C,\nTOut_max=18°C) to minimize fan energy.\n \n
\n\nDuring occupied and Setup modes (uOpeMod=1, uOpeMod=2)
\n\nThe TSupSet shall be reset from TSupCoo_min when the outdoor\nair temperature is TOut_max and above, proportionally up to\nmaximum supply temperature when the outdoor air temperature is TOut_min and\nbelow. The maximum supply temperature shall be reset using trim and respond logic between\nTSupCoo_min and TSupCoo_max. Parameters suggested for the\ntrim and respond logic are shown in the table below. They require adjustment\nduring the commissioning and tuning phase.\n
\n\n\n| Variable | Value | Definition |
|---|
\n| Device | AHU Supply Fan | Associated device |
\n| SP0 | iniSet | Initial setpoint |
\n| SPmin | TSupCoo_min | Minimum setpoint |
\n| SPmax | TSupCoo_max | Maximum setpoint |
\n| Td | delTim | Delay timer |
\n| T | samplePeriod | Time step |
\n| I | numIgnReq | Number of ignored requests |
\n| R | uZonTemResReq | Number of requests |
\n| SPtrim | triAmo | Trim amount |
\n| SPres | resAmo | Respond amount |
\n| SPres_max | maxRes | Maximum response per time interval |
\n
\n
\n\n\n![\\\"Image]()
\n
\n\nDuring Cool-down modes (uOpeMod=3)
\n\nSupply air temperature setpoint TSupSet shall be TSupCoo_min.\n
\nDuring Setback and Warmup modes (uOpeMod=4, uOpeMod=5)
\n\nSupply air temperature setpoint TSupSet shall be TSupWarUpSetBac.\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature"},{"instance":{"name":"ashOutAirSet","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"venStd"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Outdoor airflow related calculations at the AHU level","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis sequence outputs AHU level uncorrected minimum outdoor airflow rate\nVUncOutAir_flow and effective minimum outdoor airflow rate\nVEffOutAir_flow when complying with ASHRAE Standard 62.1 ventilation requirements.\nIt is implemented according to Section 5.16.3.1 of ASHRAE\nGuideline G36, May 2020.\n
\n\nIt requires following inputs which are sum or maximum of the outputs from\nthe zone level calculation. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.SumZone\nfor these inputs.\n
\n\n- \nSum of the adjusted population component breathing zone flow rate for all zones that are in\nall zone groups in occupied mode,
VSumAdjPopBreZon_flow.\n \n- \nSum of the adjusted area component breathing zone flow rate for all zones that are in\nall zone groups in occupied mode,
VSumAdjAreBreZon_flow.\n \n- \nSum of the zone primary airflow rates for all zones in all zone groups that are\nin occupied mode,
VSumZonPri_flow.\n \n- \nMaximum zone outdoor air fraction for all zones in all zone groups that are\nin occupied mode,
uOutAirFra_max.\n \n
\n\nThe calculation is done using the steps below.\n
\n\n- \nSee Section 3.1.4.2.a of Guideline 36 for setpoints
VUncDesOutAir_flow\nand VDesTotOutAir_flow.\n \n- \nThe uncorrected outdoor airflow rate setpoint
VUncOutAir_flow is recalculated\ncontinuously based on the adjusted population and area component breathing zone flow rate\nof the zones being served determined in accordance with Section 5.2.1.3. See\n\nBuildings.Controls.OBC.ASHRAE.G36.VentilationZones.ASHRAE62_1.Setpoints.\n\n VUncOutAir_flow = min(VUncDesOutAir_flow, (VSumAdjPopBreZon_flow + VSumAdjAreBreZon_flow))\n
\n \n- \nCalculate the current system ventilation efficiency as\n
\n sysVenEff = 1 + (VUncOutAir_flow/VSumZonPri_flow) - uOutAirFra_max\n
\n \n- \nCalculate the effective minimum outdoor air setpoint
VEffOutAir_flow as\nthe uncorrected outdoor air intake divided by the system ventilation efficiency,\nbut no larger than the design total outdoor airflow rate VDesTotOutAir_flow:\n\n VEffOutAir_flow = min(VUncOutAir_flow/sysVenEff, VDesTotOutAir_flow)\n
\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.AHU"},{"instance":{"name":"relDam","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"buiPreCon"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReliefDamper"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Relief damper control for AHUs using actuated dampers without fan","classCdlAnnotation":null,"classDocInfo":"\"\n\nSequence for controlling actuated relief damper yRelDam for AHUs using\nactuated relief damper without a fan.\nIt is implemented according to Section 5.16.8 of ASHRAE Guideline G36, May 2020.\n
\n\n- \nRelief dampers shall be enabled when the associated supply fan is proven on\n(
u1SupFan = true), and disabled otherwise.\n \n- \nWhen enabled, use a P-only control loop to modulate relief dampers to maintain building\nstatic pressure
dpBui at its setpoint, which is by defaul\n12 Pa (0.05 inchWC).\n \n- \nClose damper when disabled.\n
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefDamper"},{"instance":{"name":"retFanDpCon","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"buiPreCon"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReturnFanDp"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Return fan control with direct building pressure control","classCdlAnnotation":null,"classDocInfo":"\"\n\nSetpoint for return fan discharge pressure and relief air damper\nfor a multi zone VAV AHU according to Section 5.16.10 of ASHRAE Guideline G36, May 2020.\n
\n\nNote that this sequence assumes that the AHU units with return fan having the\nreturn fan with direct building pressure control have the minimum outdoor air damper.\n
\n\n- \n
Return fan operates whenever associated supply fan is proven on and is\noff otherwise.
\n \n- \n
Return fan is controlled to maintain return fan discharge static pressure\nat setpoint dpBuiSet.
\n \n- \n
Relief damper is only enabled when the associated supply and return\nfans are proven on (u1SupFan=true) and the minimum outdoor air damper is open\n(to be controlled in a separate sequence).\nThe relief dampers is closed when the fan is disabled.
\n \n- \n
The building static pressure is time averaged with a sliding 5-minute window\nto dampen fluctuations. The averaged value shall be displayed and is used\nfor control.
\n \n- \n
When the relief damper is enabled, a control loop modulates the relief damper\nin sequence with the return fan static pressure setpoint as shown in the figure\nbelow to maintain the building pressure equal to dpBuiSet,\nwhich is by default 12 Pa (0.05 inches).\n
\n \n
\n\nThe output signal of the building pressure control is as follows:\n
\n\n- \nFrom 0 to 0.5, the building pressure control loop modulates the exhaust\ndampers from
yRelDam = 0 (closed) to yRelDam = 1 (open).\n \n- \nFrom 0.5 to 1, the building pressure control loop resets the return fan\ndischarge static pressure setpoint from
p_rel_RetFan_min\nto p_rel_RetFan_max. The p_rel_RetFan_min and\np_rel_RetFan_max are specified in Section 3.2.1.4.\n \n
\n\n![\\\"Image]()
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanDirectPressure"},{"instance":{"name":"retFanAirTra","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"buiPreCon"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReturnFanMeasuredAir"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Return fan control for AHUs using return fan with airflow tracking","classCdlAnnotation":null,"classDocInfo":"\"\n\nSequence for controlling return fan yRetFan for AHUs using return fan\nwith airflow tracking.\nIt is implemented according to Section 5.16.11 of ASHRAE Guideline G36, May 2020.\n
\n\n- \nReturn fan operates whenever associated supply fan is proven on\n(
u1SupFan = true).\n \n- \nReturn fan speed shall be controlled to maintain return airflow equal to supply\nairflow less differential
difFloSet, as determined per section 3.2.1.5.\n \n- \nRelief or exhaust dampers shall be enabled when the associated supply and return\nfans are proven on and closed otherwise. Exhaust dampers shall modulate as the inverse\nof the return air damper per section 5.16.2.3. This is implemented in\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Subsequences.Modulations.ReturnFan\n
\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanAirflowTracking"},{"instance":{"name":"tit24OutAirSet","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"venStd"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"AHU level setpoint calculation","classCdlAnnotation":null,"classDocInfo":"\"\n\nThis sequence outputs AHU level effective outdoor air absolute minimum and design\nminimum setpoints VEffAbsOutAir_flow, VEffDesOutAir_flow and\nthe nomalized minimum setpoint effOutAir_normalized\nwhen complying with California Title 24 ventilation requirements.\nIt is implemented according to Section 5.16.3.2 of ASHRAE\nGuideline G36, May 2020.\n
\n\nIt calculates as below:\n
\n\n- \nSee the sum of zone absolute and design minimum outdoor airflow setpoint\n
VSumZonAbsMin_flow and VSumZonDesMin_flow from\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.SumZone for the detailed\ndescription.\n \n- \nEffective outdoor air absolute minimum and design minimum setpoints\n(
VEffAbsOutAir_flow and VEffDesOutAir_flow) are recalculated\ncontinuously based on the mode of the zones being served.\n\n- \nEffective outdoor air absolute minimum setpoint
VEffAbsOutAir_flow is\nthe sum of VZonAbsMin_flow for all zones in all zone groups that\nare in occupied mode but shall be no larger than the absolute minimum outdoor airflow\nVAbsOutAir_flow.\n \n- \nEffective outdoor air design minimum setpoint
VEffDesOutAir_flow is\nthe sum of VZonDesMin_flow for all zones in all zone groups that\nare in occupied mode but shall be no larger than the absolute minimum outdoor airflow\nVDesOutAir_flow.\n \n
\n \n- \nAccording to section 5.16.4, 5.16.5 and 5.16.6, the effective minimum outdoor airflow\nsetpoint should be reset based on the highest zone CO2 control- loop signal from\n
VEffAbsOutAir_flow at 50% signal to VEffDesOutAir_flow\nat 100% signal. When there is no CO2 sensor in any zone, the effective minimum\noutdoor airflow setpoint should be equal to the VEffDesOutAir_flow.\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.AHU"},{"instance":{"name":"relFanCon","protected":false,"condition":{"simple_expression":{"logical_expression":{"logical_or":[{"logical_and":[{"arithmetic_expressions":[{"name":"buiPreCon"},{"name":"Buildings.Controls.OBC.ASHRAE.G36.Types.PressureControl.ReliefFan"}],"relation_operator":"=="}]}]}}},"cdlAnnotation":null},"descriptionString":"Sequence for control of relief fan in AHU","classCdlAnnotation":null,"classDocInfo":"\"\n\nSequence for controling relief fan that is part of AHU. It is developed based on\nSection 5.16.9 of ASHRAE Guideline 36, May 2020, with the modification to accommodate\nthe single relief fan control.\n
\n\n- \nThe relief fan shall be enabled when the AHU supply fan is proven ON\n(
u1SupFan=true), and shall be disabled otherwise.\n \n- \nBuilding static pressure (
dpBui) shall be time averaged with a sliding\n5-minute window and 15 second sampling rate (to dampen fluctuations). The average\nvalue shall be that displayed and used for control.\n \n- \nA P-only control loop maintains the building pressure at a set point (
dpBuiSet)\nof 12 Pa (0.05 in. of water) with an output ranging from 0% to 100%. The loop is disabled\nand output set to zero when the relief fan is disabled.\n \n- \nFan speed shall be equal to the PID signal but no less than the minimum speed.\n
\n- \nWhen relief system is enabled, and the control loop\noutput is above 5%, open the motorized dampers to the relief fans;\nclose the dampers when the loop output drops to 0% for 5 minutes.\n
\n- \nWhen the control loop output is above minimum speed (
relFanSpe_min) plus 15%\nby 7 minutes, start the relief fan.\n \n- \nWhen the control loop output is below minimum speed (
relFanSpe_min)\nby 5 minutes, shut off the relief fan.\n \n
\n \n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefFan"},{"descriptionString":"Multizone VAV air handling unit controller","classCdlAnnotation":null,"classDocInfo":"\"\n\nBlock that is applied for multizone VAV AHU control. It outputs the supply fan status\nand the operation speed, outdoor and return air damper position, supply air\ntemperature setpoint and the valve position of the cooling and heating coils.\nIt is implemented according to the Section 5.16 of ASHRAE Guideline 36, May 2020.\n
\n\nThe sequence consists of eight types of subsequences.\n
\nSupply fan speed control
\n\nThe fan speed control is implemented according to Section 5.16.1. It outputs\nthe boolean signal y1SupFan to turn on or off the supply fan.\nIn addition, based on the pressure reset request uZonPreResReq\nfrom the VAV zones controller, the\nsequence resets the duct pressure setpoint, and uses this setpoint\nto modulate the fan speed ySupFanSpe using a PI controller.\nSee\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan\nfor more detailed description.\n
\nMinimum outdoor airflow setting
\n\nAccording to current occupany, supply operation status ySupFan,\nzone temperatures and the discharge air temperature, the sequence computes the\nminimum outdoor airflow rate setpoint, which is used as input for the economizer control.\nMore detailed information can be found in\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.\n
\nEconomizer control
\n\nThe block outputs outdoor and return air damper position, yOutDamPos and\nyRetDamPos. First, it computes the position limits to satisfy the minimum\noutdoor airflow requirement. Second, it determines the availability of the economizer based\non the outdoor condition. The dampers are modulated to track the supply air temperature\nloop signal, which is calculated from the sequence below, subject to the minimum outdoor airflow\nrequirement and economizer availability.\nSee\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller\nfor more detailed description.\n
\nSupply air temperature setpoint
\n\nBased on the Section 5.16.2, the sequence first sets the maximum supply air temperature\nbased on reset requests collected from each zone uZonTemResReq. The\noutdoor temperature TOut and operation mode uOpeMod are used\nalong with the maximum supply air temperature, for computing the supply air temperature\nsetpoint. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature\nfor more detailed description.\n
\nCoil valve control
\n\nThe subsequence retrieves supply air temperature setpoint from previous sequence.\nAlong with the measured supply air temperature and the supply fan status, it\ngenerates coil valve positions. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals\nfor more detailed description.\n
\nFreeze protection
\n\nBased on the Section 5.16.12, the sequence enables freeze protection if the\nmeasured supply air temperature belows certain thresholds. There are three\nprotection stages. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection\nfor more detailed description.\n
\nBuilding pressure control
\n\nBy selecting different building pressure control designs, which includes using actuated\nrelief damper without fan, using actuated relief dampers with relief fan, using\nreturn fan with direct building pressure control, or using return fan with airflow\ntracking control, the sequences controls relief fans, relief dampers and return fans.\nSee belows sequences for more detailed description:\n
\n\nPlant request
\n\nAccording to the Section 5.16.16, the sequence send out heating or cooling plant requests\nif the supply air temperature is below or above threshold value, or the heating or\ncooling valves have been widely open for certain times. See\n\nBuildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests\nfor more detailed description.\n
\n\"","fullClassName":"Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Controller"}]}
\ No newline at end of file
diff --git a/test/test_cdlDoc.js b/test/test_cdlDoc.js
index 30dffe77..81441870 100644
--- a/test/test_cdlDoc.js
+++ b/test/test_cdlDoc.js
@@ -1,17 +1,28 @@
const assert = require('assert');
+const cheerio = require('cheerio');
const fs = require('bluebird').promisifyAll(require('fs'));
const jsonQuery = require('../lib/jsonquery');
const math = require("mathjs");
const mocha = require('mocha');
const path = require('path');
const rewire = require('rewire');
+const sinon = require('sinon');
// We use rewire to access private functions and test them
const cdlDoc = rewire('../lib/cdlDoc.js');
+const expressionEvaluation = rewire('../lib/expressionEvaluation.js');
const unitData = JSON.parse(
fs.readFileSync(path.join(process.cwd(), 'units-si.json'), 'utf8'));
+// Function to unset rewired functions after the test is done
+let unset;
+
+mocha.afterEach(() => {
+ sinon.restore();
+ if (unset != null) { unset.call(); }
+})
+
mocha.describe('cdlDoc', function () {
mocha.describe('#sortDocSections()', function () {
const sortDocSections = cdlDoc.__get__('sortDocSections');
@@ -58,10 +69,10 @@ mocha.describe('cdlDoc', function () {
mocha.describe('#processImg()', function () {
const processImg = cdlDoc.__get__('processImg');
- mocha.it('should return the absolute image path and modify the argument object', function () {
- const htmlStr = `![\"Test](\"modelica://Library/Resources/Image.png\"`+)
`
- $ = require('cheerio').load(htmlStr);
+ mocha.it('should return the absolute image path and modify the src attributes as expected', function () {
+ const htmlStr = `![\"Test](\"modelica://Library/Resources/Image.png\"`)
`
+ $ = cheerio.load(htmlStr);
const imgPath = path.resolve(
path.join(process.cwd(), 'test', 'expressionEvaluation', 'Library', 'Resources', 'Image.png')
);
@@ -69,16 +80,63 @@ mocha.describe('cdlDoc', function () {
process.env.MODELICAPATH = process.env.MODELICAPATH + `:${libPath}`
assert.deepStrictEqual(
processImg($),
- {'Library_Resources_Image.png': imgPath}
+ { 'Library_Resources_Image.png': imgPath }
);
assert.strictEqual(
$.html(),
`` +
- `
`
+ ``
)
})
})
+ mocha.describe('#processCdlToggle()', function () {
+ const processCdlToggle = cdlDoc.__get__('processCdlToggle');
+ mocha.it('should empty the span element', function () {
+ const htmlStr = `
+ Controller for a radiant heating system.
+
+ <-- cdl(visible=controllerType <> CDL.Types.SimpleController.P) -->
+ Note:
+ For systems with high thermal mass, this controller should be left configured as a P-controller.
+
<-- end cdl -->
+ `
+ const $ = cheerio.load(htmlStr);
+ const $1 = cheerio.load(htmlStr);
+ processCdlToggle($, { controllerType: 'CDL.Types.SimpleController.P' });
+ $1('span').empty();
+ assert.strictEqual(
+ $.html(),
+ $1.html()
+ );
+ })
+ })
+
+ mocha.describe('#processHref()', function () {
+ const processHref = cdlDoc.__get__('processHref');
+ mocha.it('should modify the href attributes as expected', function () {
+ const htmlStr = `See Library.ControlBlock ` +
+ `and Library.ExternalControlBlock
`
+ const documentation = [
+ {
+ descriptionString: 'Heading from description string',
+ fullClassName: 'Library.ControlBlock',
+ headingNum: '5'
+ }
+ ];
+ const libPath = path.join(process.cwd(), 'test', 'expressionEvaluation');
+ process.env.MODELICAPATH = process.env.MODELICAPATH + `:${libPath}`
+ const $ = cheerio.load(htmlStr);
+ processHref($, documentation);
+ assert.strictEqual(
+ $.html(),
+ `See Section 5 and Library.ExternalControlBlock
`
+ );
+ })
+ })
+
mocha.describe('#createAnchorId()', function () {
const createAnchorId = cdlDoc.__get__('createAnchorId');
mocha.it('should return "1.1heading-text"', function () {
@@ -161,4 +219,30 @@ mocha.describe('cdlDoc', function () {
})
})
+ mocha.describe('#buildDoc()', function () {
+ mocha.it('should create the expected HTML document', function () {
+ const outputDir = path.join(process.cwd(), 'tmp');
+ const paramAndDoc = JSON.parse(fs.readFileSync(path.join(
+ process.cwd(), 'test', 'expressionEvaluation', 'MultiZoneVavParamAndDoc.json'
+ ), 'utf8'));
+ unset = cdlDoc.__set__({
+ expressionEvaluation: {
+ ...expressionEvaluation,
+ getParametersAndBindings: function () {
+ return paramAndDoc;
+ }
+ }
+ });
+ const jsons = JSON.parse(fs.readFileSync(path.join(
+ process.cwd(), 'test', 'expressionEvaluation', 'MultiZoneVav.json'
+ ), 'utf8'));
+ cdlDoc.buildDoc(jsons[0], jsons, unitData, outputDir, 'MultiZoneVavDoc');
+ const htmlDoc = fs.readFileSync(path.join(outputDir, 'MultiZoneVavDoc.html'), 'utf8');
+ const htmlDocExp = fs.readFileSync(path.join(
+ process.cwd(), 'test', 'expressionEvaluation', 'MultiZoneVavDoc.html'
+ ), 'utf8');
+ fs.rmSync(outputDir, { recursive: true, force: true });
+ assert.strictEqual(htmlDoc, htmlDocExp);
+ })
+ })
})
![\\\"IntegerConstant.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Integers/Sources/Constant.png\\\"\n)
\n![\\\"Constant.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Reals/Constant.png\\\"\n)
\n![\\\"Constant.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Logical/Constant.png\\\"\n)
\n![\\\"Latch.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Logical/Latch.png\\\"\n)
\n![](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Logical/TrueFalseHold.png\\\"\nalt=\\\"Input)
\n![\\\"OnDelay1.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Logical/TrueDelay1.png\\\"\n)
\n![\\\"OnDelay2.png\\\"](\\\"modelica://Buildings/Resources/Images/Controls/OBC/CDL/Logical/TrueDelay2.png\\\"\n)
\n