Waste heat rejection from geothermal power stations
This study of waste heat rejection from geothermal power stations is concerned only with the heat rejected from the power cycle. The heat contained in reinjected or otherwise discharged geothermal fluids is not included with the waste heat considered here. The heat contained in the underflow from the flashtanks in such systems is not considered as part of the heat rejected from the power cycle. By following this definition of the waste heat to be rejected, various methods of waste heat dissipation are discussed without regard for the particular arrangement to obtain heat from the geothermal source. Recent conceptual design studies made for 50-MW(e) geothermal power stations at Heber and Niland, California, are of particular interst. The former uses a flashed-steam system and the latter a binary cycle that uses isopentane. In last-quarter 1976 dollars, the total estimated capital costs were about $750/kW and production costs about 50 mills/kWhr. If wet/dry towers were used to conserve 50% of the water evaporation at Heber, production costs would be about 65 mills/kWhr.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6765926
- Report Number(s):
- ORNL/TM-6533
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150802* -- Geothermal Power Plants-- Power Plant Systems & Components
AUXILIARY SYSTEMS
AUXILIARY WATER SYSTEMS
BINARY-FLUID SYSTEMS
CONDENSER COOLING SYSTEMS
CONDENSERS
COOLING PONDS
COOLING SYSTEMS
COOLING TOWERS
COST
EFFICIENCY
ENERGY
ENERGY SOURCES
ENERGY TRANSFER
FLASHED STEAM SYSTEMS
FLUIDS
GEOTHERMAL FIELDS
GEOTHERMAL FLUIDS
GEOTHERMAL POWER PLANTS
Geothermal Legacy
HEAT
HEAT TRANSFER
HEBER GEOTHERMAL FIELD
MATERIALS
OPERATION
PONDS
POWER PLANTS
RANKINE CYCLE
SALTON SEA GEOTHERMAL FIELD
SURFACE WATERS
THERMAL POWER PLANTS
THERMODYNAMIC CYCLES
WASTE HEAT
WASTES
WATER RESERVOIRS