Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation
Abstract
:1. Introduction
2. Methodology
2.1. Process Simulations
Parameter | Unit | |
---|---|---|
Isentropic efficiency of the ORC-turbine ηi,T | % | 80 |
Generator efficiency ηG | % | 95 |
Isentropic efficiency of the ORC-pump ηi,P | % | 75 |
ΔTPP,EVP | K | 5 |
TCW,in | °C | 15 |
ΔTCW | K | 5 |
Parameter | Unit | |
---|---|---|
Electrical power output Pel | kW | 2717 |
Thermal power output | kW | 1315 |
Engine coolant outlet temperature TCW,out | °C | 87.8 |
Engine coolant inlet temperature TCW,in | °C | 65.5 |
Engine coolant mass flow rate ṁCW | kg/s | 19.9 |
Exhaust gas outlet temperature TEG,out | °C | 463.9 |
Exhaust gas mass flow rate ṁEG | kg/s | 4.35 |
2.2. Second Law Analyses
2.3. Economic Analyses
3. Results and Discussion
3.1. Thermodynamic Results
Parameter | R245fa-GeoCHP | R245fa-Hybrid | Isopentane-GeoCHP | Isopentane-Hybrid |
---|---|---|---|---|
p1 (bar) | 1.47 | 1.47 | 0.90 | 0.90 |
p2 (bar) | 6.53 | 6.94 | 3.67 | 3.85 |
3.1.1. ORC Working Fluid
3.1.2. Geothermal Conditions
3.1.3. Supply Temperature of the Heating Network
3.2. Economic Results
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Heberle, F.; Brüggemann, D. Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation. Energies 2014, 7, 4482-4497. https://doi.org/10.3390/en7074482
Heberle F, Brüggemann D. Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation. Energies. 2014; 7(7):4482-4497. https://doi.org/10.3390/en7074482
Chicago/Turabian StyleHeberle, Florian, and Dieter Brüggemann. 2014. "Thermoeconomic Analysis of Hybrid Power Plant Concepts for Geothermal Combined Heat and Power Generation" Energies 7, no. 7: 4482-4497. https://doi.org/10.3390/en7074482