Example for the exergy analysis in TESPy. Find more information about the exergy analysis feature in the respective online documentation.
The supercritical CO2 power cycle model has the following topology:
Find the model specifications and results in the sCO2.py script and the corresponding pdf model report.
Clone the repository and build a new python environment. From the base directory of the repository run
pip install -r ./requirements.txtto install the version requirements for the sCO2.py python script.
The original data of the plant are obtained from the following publication:
M. Penkuhn, G. Tsatsaronis, Exergoeconomic analyses of different sCO2 cycle configurations, in: The 6th International Symposium – Supercritical CO2 Power Cycles, 2018.
The tables below show the results of the simulation as well as the validation results. The original data from the publication are provided in the .csv files component_validation.csv and connection_validation.csv.
TESPy simulation
| e_PH in kJ/kg | e_T in kJ/kg | e_M in kJ/kg | E_PH in MW | E_T in MW | E_M in MW | |
|---|---|---|---|---|---|---|
| 0 | 580.2 | 362.9 | 217.2 | 683.34 | 427.47 | 255.86 |
| 1 | 206.1 | 7.6 | 198.5 | 176.65 | 6.51 | 170.14 |
| 2 | 252.9 | 34.8 | 218.1 | 216.85 | 29.87 | 186.98 |
| 3 | 449.4 | 231.4 | 218.0 | 529.24 | 272.54 | 256.70 |
| 4 | 580.2 | 362.9 | 217.2 | 683.34 | 427.47 | 255.86 |
| 5 | 412.8 | 214.0 | 198.8 | 486.14 | 252.00 | 234.15 |
| 6 | 232.0 | 33.6 | 198.5 | 198.93 | 28.77 | 170.16 |
| 10 | 232.0 | 33.6 | 198.5 | 74.36 | 10.75 | 63.61 |
| 11 | 334.4 | 116.4 | 218.0 | 107.17 | 37.31 | 69.86 |
| 12 | 334.4 | 116.4 | 218.0 | 286.71 | 99.81 | 186.90 |
| 13 | 334.4 | 116.4 | 218.0 | 393.88 | 137.12 | 256.76 |
| 14 | 294.6 | 95.9 | 198.7 | 347.02 | 113.01 | 234.01 |
| 15 | 232.0 | 33.6 | 198.5 | 273.28 | 39.52 | 233.77 |
Absolute difference in the values Δ
| Δ T in °C | Δ p in bar | Δ e_T in kJ/kg | Δ e_M in kJ/kg | |
|---|---|---|---|---|
| 1 | -0.0 | -0.00 | -0.0 | 0.0 |
| 2 | -0.0 | 0.00 | -0.0 | 0.0 |
| 3 | 0.1 | 0.00 | 0.0 | 0.0 |
| 4 | 0.0 | 0.00 | 0.0 | 0.0 |
| 5 | 0.2 | -0.00 | 0.0 | 0.0 |
| 6 | -0.0 | 0.00 | -0.0 | -0.0 |
| 10 | -0.0 | 0.00 | -0.0 | -0.0 |
| 11 | 0.0 | 0.00 | -0.0 | 0.0 |
| 12 | 0.0 | 0.00 | -0.0 | 0.0 |
| 13 | 0.0 | 0.00 | -0.0 | 0.0 |
| 14 | 0.0 | 0.00 | 0.0 | 0.0 |
| 15 | -0.0 | 0.00 | -0.0 | -0.0 |
Relative deviation in the values δ
| δ T in % | δ p in % | δ e_T in % | δ e_M in % | |
|---|---|---|---|---|
| 1 | -0.0 | -0.0 | -0.0 | 0.0 |
| 2 | -0.0 | 0.0 | -0.0 | 0.0 |
| 3 | 0.0 | 0.0 | 0.1 | 0.0 |
| 4 | 0.0 | 0.0 | 0.1 | 0.0 |
| 5 | 0.0 | -0.0 | 0.1 | 0.0 |
| 6 | -0.0 | 0.0 | -0.0 | -0.0 |
| 10 | -0.0 | 0.0 | -0.0 | -0.0 |
| 11 | 0.0 | 0.0 | -0.0 | 0.0 |
| 12 | 0.0 | 0.0 | -0.0 | 0.0 |
| 13 | 0.0 | 0.0 | -0.0 | 0.0 |
| 14 | 0.0 | 0.0 | 0.0 | 0.0 |
| 15 | -0.0 | 0.0 | -0.0 | -0.0 |
Deviation due to differences in fluid property data
TESPy simulation
| E_F in MW | E_P in MW | E_D in MW | ε in % | y_Dk in % | y*_Dk in % | |
|---|---|---|---|---|---|---|
| Heater | 154.93 | 154.09 | 0.84 | 99.5 | 0.5 | 1.5 |
| Cycle closer | nan | nan | nan | nan | nan | nan |
| Water cooler | 22.28 | nan | 22.28 | nan | 14.4 | 40.6 |
| Compressor 1 | 47.49 | 40.20 | 7.29 | 84.6 | 4.7 | 13.3 |
| Recuperator 1 | 73.81 | 69.93 | 3.87 | 94.8 | 2.5 | 7.1 |
| Recuperator 2 | 139.19 | 135.43 | 3.76 | 97.3 | 2.4 | 6.8 |
| Turbine | 197.19 | 185.07 | 12.12 | 93.9 | 7.8 | 22.1 |
| Splitter 1 | nan | nan | nan | nan | nan | nan |
| Compressor 2 | 37.58 | 32.81 | 4.76 | 87.3 | 3.1 | 8.7 |
| Merge 1 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.0 |
Absolute difference in the values Δ
| Δ E_F in MW | Δ E_P in MW | Δ E_D in MW | |
|---|---|---|---|
| Compressor 1 | -0.11 | -0.00 | -0.01 |
| Compressor 2 | -0.12 | -0.09 | -0.04 |
| Heater | -3.07 | -1.01 | -2.06 |
| Recuperator 1 | -0.09 | -0.07 | -0.03 |
| Recuperator 2 | -0.01 | 0.03 | -0.04 |
| Turbine | -0.21 | -0.23 | -0.08 |
Relative deviation in the values δ
| δ E_F in % | δ E_P in % | δ E_D in % | |
|---|---|---|---|
| Compressor 1 | -0.23 | -0.00 | -0.09 |
| Compressor 2 | -0.33 | -0.26 | -0.75 |
| Heater | -1.94 | -0.65 | -71.11 |
| Recuperator 1 | -0.12 | -0.09 | -0.65 |
| Recuperator 2 | -0.01 | 0.02 | -0.99 |
| Turbine | -0.11 | -0.12 | -0.63 |
High deviation due to differences in component exergy balances
| E_F in MW | E_P in MW | E_D in MW | E_L in MW | ε in % |
|---|---|---|---|---|
| 154.93 | 100.00 | 54.93 | 0.00 | 64.5 |
The state of this repository is archived via zenodo. If you are using the TESPy model within your own research, you can refer to this model via the zenodo doi: 10.5281/zenodo.4751796.
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