Vaporization at supercritical pressures and counterflow condensing of pure and mixed-hydrocarbon working fluids for geothermal power plants

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5641225

Bliem, C J; Demuth, O J; Mines, G L; Swank, W D

The Heat Cycle Research Program has as its objective the development of the technology for effecting improved utilization of moderate temperature geothermal resources. Current testing involves supercritical vaporization and counterflow in-tube condensing in an organic Rankine cycle. Results of the experiments are given for both pure and mixed-hydrocarbon working fluids. The heater and condenser behavior predicted by the Heat Transfer Research, Inc. computer codes used for correlation of the data was in excellent agreement with experimental results. A special series of tests, conducted with propane and up to approximately 40% isopentane concentration indicated that a close approach to ''integral'' condensation was occurring in the vertically-oriented condenser.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5641225
• Report Number(s): EGG-M-09186; CONF-860810-10; ON: DE86011034
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
2-METHYLBUTANE
2-METHYLPROPANE
ALKANES
AUXILIARY SYSTEMS
AUXILIARY WATER SYSTEMS
CONDENSER COOLING SYSTEMS
COOLING SYSTEMS
COUNTERFLOW SYSTEMS
ENERGY SYSTEMS
ENERGY TRANSFER
EVAPORATION
FLUIDS
GEOTHERMAL FLUIDS
Geothermal Legacy
HEAT TRANSFER
HEXANE
HYDROCARBONS
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
POWER SYSTEMS
PROPANE
RANKINE CYCLE
RANKINE CYCLE POWER SYSTEMS
THERMODYNAMIC CYCLES
VAPOR CONDENSATION
WORKING FLUIDS