From 4aaa7c0b09bd71c8552498138592c753d9761bc3 Mon Sep 17 00:00:00 2001
From: Julien Marrec <julien.marrec@gmail.com>
Date: Fri, 13 Dec 2024 13:41:19 +0100
Subject: [PATCH] Calculate DesignLeavingWaterTemp in all cases, since it's
 reported (and used to report Range & Approach)

---
 src/EnergyPlus/FluidCoolers.cc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/EnergyPlus/FluidCoolers.cc b/src/EnergyPlus/FluidCoolers.cc
index a13f590d5bb..3e4656c8d71 100644
--- a/src/EnergyPlus/FluidCoolers.cc
+++ b/src/EnergyPlus/FluidCoolers.cc
@@ -1572,6 +1572,24 @@ void FluidCoolerspecs::size(EnergyPlusData &state)
     ErrorsFound = false;
 
     if (state.dataPlnt->PlantFinalSizesOkayToReport) {
+
+        if (this->DesignLeavingWaterTemp <= HVAC::SmallTempDiff) {
+            this->WaterTemp = this->DesignEnteringWaterTemp;       // design inlet water temperature
+            this->AirTemp = this->DesignEnteringAirTemp;           // design inlet air dry-bulb temp
+            this->AirWetBulb = this->DesignEnteringAirWetBulbTemp; // design inlet air wet-bulb temp
+            this->AirPress = state.dataEnvrn->StdBaroPress;
+            this->AirHumRat = Psychrometrics::PsyWFnTdbTwbPb(state, this->AirTemp, this->AirWetBulb, this->AirPress);
+            Real64 OutletTemp = 0;
+            rho = FluidProperties::GetDensityGlycol(state,
+                                                    state.dataPlnt->PlantLoop(this->plantLoc.loopNum).FluidName,
+                                                    Constant::InitConvTemp,
+                                                    state.dataPlnt->PlantLoop(this->plantLoc.loopNum).FluidIndex,
+                                                    CalledFrom);
+            CalcFluidCoolerOutlet(
+                state, this->indexInArray, rho * this->DesignWaterFlowRate, this->HighSpeedAirFlowRate, this->HighSpeedFluidCoolerUA, OutletTemp);
+            this->DesignLeavingWaterTemp = OutletTemp;
+        }
+
         // create predefined report
         OutputReportPredefined::PreDefTableEntry(
             state, state.dataOutRptPredefined->pdchMechType, this->Name, DataPlant::PlantEquipTypeNames[static_cast<int>(this->FluidCoolerType)]);