High geothermal energy utilization geothermal/fossil hybrid power cycle: a preliminary investigation
Combining geothermal and fossil fuel energy into the so-called hybrid cycle is compared with a state-of-the-art double-flash geothermal power cycle using resources which vary from 429/sup 0/K (312/sup 0/F) to 588/sup 0/K (598/sup 0/F). It is demonstrated that a hybrid plant can compete thermodynamically with the combined output from both a fossil-fired and a geothermal plant operating separately. Economic comparison of the hybrid and double-flash cycles is outlined, and results are presented that indicate the performance of marginal hydrothermal resources may be improved enough to compete with existing power cycles on a cost basis. It is also concluded that on a site-specific basis a hybrid cycle is capable of complementing double-flash cycles at large-capacity resources, and can operate in a cycling load mode at constant geothermal fluid flow rate.
- Research Organization:
- Burbank City Public Service Dept., CA (USA)
- DOE Contract Number:
- EG-77-G-03-1572
- OSTI ID:
- 5753833
- Report Number(s):
- SAN-1572-T1
- Country of Publication:
- United States
- Language:
- English
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20 FOSSIL-FUELED POWER PLANTS
FLASHED STEAM SYSTEMS
COMPARATIVE EVALUATIONS
FOSSIL-FUEL POWER PLANTS
HYBRID SYSTEMS
GEOTHERMAL POWER PLANTS
ECONOMIC ANALYSIS
PERFORMANCE
COOLING TOWERS
FLOW RATE
OPTIMIZATION
THERMODYNAMICS
TOPPING CYCLES
WATER CHEMISTRY
ECONOMICS
POWER PLANTS
THERMAL POWER PLANTS
Geothermal Legacy
150802* - Geothermal Power Plants- Power Plant Systems & Components
200102 - Fossil-Fueled Power Plants- Power Cycles