Example for the exergy analysis in TESPy. Find more information about the exergy analysis feature in the respective online documentation.
The so called "Solar Energy Generating System (SEGS)" model has the following topology:
Find the model specifications and results in the SEGS.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 SEGS.py python script.
On top of the python script, an EBSILON model (v14.03.01) for the identical setup is provided for validation. The results are available in the respective flowsheet. The solar field is not considered for further investigation, thus it represents a heat input only.
The original data of the plant are partially obtained from the following reports:
F. Lippke, Simulation of the part-load behavior of a 30 MWe SEGS plant, Technical Report SAND-95-1293, Sandia National Lab., Albuquerque, 1995. URL:https://www.osti.gov/biblio/95571. doi:10.2172/95571.
D. Kearney, C. E. Miller, Technical Evaluation of Project Feasibilty for SEGS VI, Technical Report,1988. Submitted to Luz Solar Partners VI.
| 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 | |
|---|---|---|---|---|---|---|
| 1 | 1197.3 | 1187.4 | 9.9 | 46.66 | 46.27 | 0.39 |
| 2 | 1197.3 | 1187.4 | 9.9 | 46.66 | 46.27 | 0.39 |
| 3 | 977.5 | 974.2 | 3.3 | 38.09 | 37.96 | 0.13 |
| 4 | 977.5 | 974.2 | 3.3 | 35.20 | 35.08 | 0.12 |
| 5 | 869.2 | 867.5 | 1.8 | 31.30 | 31.24 | 0.06 |
| 6 | 869.2 | 867.5 | 1.8 | 29.14 | 29.08 | 0.06 |
| 7 | 1074.3 | 1072.7 | 1.6 | 36.01 | 35.96 | 0.05 |
| 8 | 884.5 | 883.8 | 0.7 | 29.65 | 29.63 | 0.02 |
| 9 | 884.5 | 883.8 | 0.7 | 27.46 | 27.43 | 0.02 |
| 10 | 653.7 | 653.6 | 0.2 | 20.29 | 20.29 | 0.01 |
| 11 | 653.7 | 653.6 | 0.2 | 19.14 | 19.13 | 0.01 |
| 12 | 469.8 | 469.8 | -0.0 | 13.75 | 13.75 | -0.00 |
| 13 | 469.8 | 469.8 | -0.0 | 13.00 | 13.00 | -0.00 |
| 14 | 287.9 | 287.9 | -0.1 | 7.97 | 7.97 | -0.00 |
| 15 | 287.9 | 287.9 | -0.1 | 7.65 | 7.65 | -0.00 |
| 16 | 115.8 | 115.9 | -0.1 | 3.08 | 3.08 | -0.00 |
| 17 | 99.7 | 99.8 | -0.1 | 3.10 | 3.10 | -0.00 |
| 18 | 1.7 | 1.8 | -0.1 | 0.05 | 0.06 | -0.00 |
| 19 | 3.3 | 1.9 | 1.4 | 0.10 | 0.06 | 0.04 |
| 20 | 3.8 | 2.5 | 1.4 | 0.12 | 0.08 | 0.04 |
| 21 | 10.4 | 9.5 | 0.9 | 0.32 | 0.29 | 0.03 |
| 22 | 11.7 | 10.8 | 0.9 | 0.36 | 0.34 | 0.03 |
| 23 | 29.4 | 28.6 | 0.8 | 0.91 | 0.89 | 0.02 |
| 24 | 30.6 | 29.9 | 0.8 | 0.95 | 0.93 | 0.02 |
| 25 | 59.0 | 58.3 | 0.7 | 1.83 | 1.81 | 0.02 |
| 26 | 115.4 | 114.7 | 0.7 | 4.50 | 4.47 | 0.03 |
| 27 | 130.2 | 117.8 | 12.4 | 5.07 | 4.59 | 0.48 |
| 28 | 135.6 | 123.2 | 12.4 | 5.28 | 4.80 | 0.48 |
| 29 | 176.6 | 165.5 | 11.1 | 6.88 | 6.45 | 0.43 |
| 30 | 180.1 | 169.0 | 11.1 | 7.02 | 6.59 | 0.43 |
| 31 | 232.6 | 222.3 | 10.3 | 9.06 | 8.66 | 0.40 |
| 32 | 412.0 | 401.8 | 10.2 | 16.06 | 15.66 | 0.40 |
| 33 | 418.1 | 407.9 | 10.2 | 32.90 | 32.09 | 0.81 |
| 34 | 736.9 | 726.6 | 10.2 | 57.98 | 57.17 | 0.81 |
| 35 | 1055.6 | 1045.4 | 10.2 | 41.14 | 40.74 | 0.40 |
| 36 | 977.5 | 974.2 | 3.3 | 2.89 | 2.88 | 0.01 |
| 37 | 237.0 | 233.7 | 3.3 | 0.70 | 0.69 | 0.01 |
| 38 | 187.0 | 183.8 | 3.3 | 0.55 | 0.54 | 0.01 |
| 39 | 185.9 | 184.1 | 1.8 | 0.55 | 0.54 | 0.01 |
| 40 | 869.2 | 867.5 | 1.8 | 2.16 | 2.16 | 0.00 |
| 41 | 498.2 | 496.4 | 1.8 | 2.71 | 2.70 | 0.01 |
| 42 | 177.0 | 175.2 | 1.8 | 0.96 | 0.95 | 0.01 |
| 43 | 135.3 | 133.5 | 1.8 | 0.74 | 0.73 | 0.01 |
| 44 | 133.9 | 133.2 | 0.7 | 0.73 | 0.73 | 0.00 |
| 45 | 884.5 | 883.8 | 0.7 | 2.20 | 2.19 | 0.00 |
| 46 | 653.7 | 653.6 | 0.2 | 1.16 | 1.16 | 0.00 |
| 47 | 63.9 | 63.8 | 0.2 | 0.11 | 0.11 | 0.00 |
| 48 | 37.1 | 37.0 | 0.2 | 0.07 | 0.07 | 0.00 |
| 49 | 36.9 | 36.9 | -0.0 | 0.07 | 0.07 | -0.00 |
| 50 | 469.8 | 469.8 | -0.0 | 0.75 | 0.75 | -0.00 |
| 51 | 242.3 | 242.3 | -0.0 | 0.82 | 0.82 | -0.00 |
| 52 | 32.7 | 32.7 | -0.0 | 0.11 | 0.11 | -0.00 |
| 53 | 14.8 | 14.8 | -0.0 | 0.05 | 0.05 | -0.00 |
| 54 | 14.6 | 14.7 | -0.1 | 0.05 | 0.05 | -0.00 |
| 55 | 287.9 | 287.9 | -0.1 | 0.32 | 0.32 | -0.00 |
| 56 | 82.3 | 82.4 | -0.1 | 0.37 | 0.37 | -0.00 |
| 57 | 11.9 | 12.0 | -0.1 | 0.05 | 0.05 | -0.00 |
| 58 | 4.6 | 4.7 | -0.1 | 0.02 | 0.02 | -0.00 |
| 59 | 4.0 | 4.1 | -0.1 | 0.02 | 0.02 | -0.00 |
| 60 | 0.9 | 0.9 | 0.0 | 1.94 | 1.93 | 0.01 |
| 61 | 0.9 | 0.9 | 0.0 | 1.94 | 1.93 | 0.01 |
| 62 | 0.2 | 0.2 | 0.0 | 0.37 | 0.37 | 0.00 |
| 63 | 0.2 | 0.2 | 0.0 | 0.41 | 0.37 | 0.04 |
| 64 | -0.0 | -0.0 | 0.0 | -0.00 | -0.00 | 0.00 |
| 65 | 0.0 | 0.0 | 0.0 | 0.49 | 0.00 | 0.49 |
| 66 | 0.0 | 0.0 | 0.0 | 0.49 | 0.49 | 0.00 |
| 70 | 278.5 | 276.4 | 2.1 | 112.89 | 112.04 | 0.85 |
| 71 | 278.5 | 276.4 | 2.1 | 112.89 | 112.04 | 0.85 |
| 72 | 278.5 | 276.4 | 2.1 | 98.39 | 97.65 | 0.74 |
| 73 | 261.4 | 259.3 | 2.0 | 92.35 | 91.63 | 0.72 |
| 74 | 186.2 | 184.3 | 1.9 | 65.80 | 65.13 | 0.67 |
| 75 | 165.0 | 163.1 | 1.8 | 58.28 | 57.64 | 0.64 |
| 76 | 278.5 | 276.4 | 2.1 | 14.50 | 14.39 | 0.11 |
| 77 | 122.8 | 121.0 | 1.8 | 6.39 | 6.30 | 0.09 |
| 78 | 159.3 | 157.5 | 1.8 | 64.60 | 63.86 | 0.74 |
| 79 | 162.7 | 158.9 | 3.8 | 65.94 | 64.41 | 1.53 |
| E_F in MW | E_P in MW | E_D in MW | ε in % | y_Dk in % | y*_Dk in % | |
|---|---|---|---|---|---|---|
| Superheater | 6.05 | 5.53 | 0.52 | 91.4 | 1.1 | 3.4 |
| Cycle closer power cycle | nan | nan | nan | nan | nan | nan |
| HP turbine 1 | 8.57 | 7.47 | 1.10 | 87.2 | 2.3 | 7.1 |
| Splitter 1 | nan | nan | nan | nan | nan | nan |
| HP turbine 2 | 3.90 | 3.40 | 0.50 | 87.2 | 1.0 | 3.2 |
| Splitter 2 | nan | nan | nan | nan | nan | nan |
| Reheater | 8.11 | 6.88 | 1.23 | 84.9 | 2.6 | 8.0 |
| LP turbine 1 | 6.36 | 5.68 | 0.69 | 89.2 | 1.4 | 4.5 |
| Splitter 3 | nan | nan | nan | nan | nan | nan |
| LP turbine 2 | 7.16 | 6.54 | 0.62 | 91.3 | 1.3 | 4.0 |
| Splitter 4 | nan | nan | nan | nan | nan | nan |
| LP turbine 3 | 5.39 | 4.95 | 0.44 | 91.9 | 0.9 | 2.8 |
| Splitter 5 | nan | nan | nan | nan | nan | nan |
| LP turbine 4 | 5.03 | 4.36 | 0.67 | 86.7 | 1.4 | 4.4 |
| Splitter 6 | nan | nan | nan | nan | nan | nan |
| LP turbine 5 | 4.57 | 2.91 | 1.66 | 63.7 | 3.5 | 10.8 |
| Merge 1 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.0 |
| Condenser | 3.07 | 1.56 | 1.51 | 50.9 | 3.2 | 9.8 |
| Condenser pump | 0.07 | 0.05 | 0.02 | 68.0 | 0.0 | 0.1 |
| Low pressure preheater 3 | 1.04 | 0.88 | 0.16 | 84.5 | 0.3 | 1.1 |
| Feedwater tank | 2.01 | 1.75 | 0.26 | 87.0 | 0.5 | 1.7 |
| Feedwater pump | 0.76 | 0.58 | 0.18 | 75.9 | 0.4 | 1.2 |
| High pressure preheater 2 | 2.22 | 2.08 | 0.14 | 93.5 | 0.3 | 0.9 |
| Economizer | 7.52 | 6.99 | 0.52 | 93.0 | 1.1 | 3.4 |
| Drum | 74.03 | 74.03 | 0.00 | 100.0 | 0.0 | 0.0 |
| Evaporator | 26.55 | 25.08 | 1.47 | 94.5 | 3.1 | 9.6 |
| Valve 1 | 0.00 | nan | 0.00 | nan | 0.0 | 0.0 |
| Merge 2 | -0.00 | 0.00 | -0.00 | -0.0 | -0.0 | -0.0 |
| High pressure preheater 1 | 1.80 | 1.65 | 0.15 | 91.6 | 0.3 | 1.0 |
| Valve 2 | 0.01 | nan | 0.01 | nan | 0.0 | 0.0 |
| Valve 3 | 0.00 | nan | 0.00 | nan | 0.0 | 0.0 |
| Merge 3 | 0.36 | 0.36 | -0.00 | 100.0 | -0.0 | -0.0 |
| Low pressure preheater 2 | 0.71 | 0.55 | 0.16 | 77.9 | 0.3 | 1.0 |
| Valve 4 | 0.00 | nan | 0.00 | nan | 0.0 | 0.0 |
| Merge 4 | -0.00 | 0.00 | -0.00 | -0.0 | -0.0 | -0.0 |
| Low pressure preheater 1 | 0.33 | 0.22 | 0.11 | 66.3 | 0.2 | 0.7 |
| Valve 5 | 0.00 | nan | 0.00 | nan | 0.0 | 0.0 |
| Cycle closer cw | nan | nan | nan | nan | nan | nan |
| Cooling tower | 2.07 | 0.49 | 1.58 | 23.6 | 3.3 | 10.3 |
| Cooling water pump | 0.06 | 0.04 | 0.02 | 67.0 | 0.0 | 0.1 |
| Ambient air source | -0.00 | nan | nan | nan | nan | nan |
| Cooling tower fan | 0.87 | 0.49 | 0.37 | 57.0 | 0.8 | 2.4 |
| Ambient air sink | nan | 0.49 | nan | nan | nan | nan |
| Parabolic trough | 47.63 | 46.95 | 0.68 | 98.6 | 1.4 | 4.4 |
| Cycle closer pt | nan | nan | nan | nan | nan | nan |
| Splitter 7 | nan | nan | nan | nan | nan | nan |
| Merge 5 | 1.98 | 1.90 | 0.08 | 95.9 | 0.2 | 0.5 |
| HTF pump | 1.79 | 1.34 | 0.45 | 75.1 | 0.9 | 2.9 |
| Low pressure preheater 1 subcooling | 0.03 | 0.02 | 0.02 | 54.0 | 0.0 | 0.1 |
| Low pressure preheater 2 subcooling | 0.06 | 0.04 | 0.02 | 69.4 | 0.0 | 0.1 |
| Low pressure preheater 3 subcooling | 0.05 | 0.04 | 0.01 | 80.1 | 0.0 | 0.1 |
| High pressure preheater 1 subcooling | 0.23 | 0.21 | 0.02 | 91.9 | 0.0 | 0.1 |
| High pressure preheater 2 subcooling | 0.15 | 0.14 | 0.01 | 93.1 | 0.0 | 0.1 |
| E_F in MW | E_P in MW | E_D in MW | E_L in MW | ε in % |
|---|---|---|---|---|
| 47.63 | 31.77 | 15.37 | 0.49 | 66.7 |
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.4726800.
MIT License
Copyright (c) 2022 Francesco Witte, Julius Meier, Ilja Tuschy, Mathias Hofmann
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.