User manual for GEOCOST: a computer model for geothermal cost analysis. Volume 2. Binary cycle version
A computer model called GEOCOST has been developed to simulate the production of electricity from geothermal resources and calculate the potential costs of geothermal power. GEOCOST combines resource characteristics, power recovery technology, tax rates, and financial factors into one systematic model and provides the flexibility to individually or collectively evaluate their impacts on the cost of geothermal power. Both the geothermal reservoir and power plant are simulated to model the complete energy production system. In the version of GEOCOST in this report, geothermal fluid is supplied from wells distributed throughout a hydrothermal reservoir through insulated pipelines to a binary power plant. The power plant is simulated using a binary fluid cycle in which the geothermal fluid is passed through a series of heat exchangers. The thermodynamic state points in basic subcritical and supercritical Rankine cycles are calculated for a variety of working fluids. Working fluids which are now in the model include isobutane, n-butane, R-11, R-12, R-22, R-113, R-114, and ammonia. Thermodynamic properties of the working fluids at the state points are calculated using empirical equations of state. The Starling equation of state is used for hydrocarbons and the Martin-Hou equation of state is used for fluorocarbons and ammonia. Physical properties of working fluids at the state points are calculated.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, Wash. (USA)
- DOE Contract Number:
- E(45-1)-1830
- OSTI ID:
- 7140516
- Report Number(s):
- BNWL-1942-V2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING, POLICY, AND ECONOMY
ALKANES
AMMONIA
BINARY-FLUID SYSTEMS
BOILERS
BUTANE
COMPUTER CODES
CONSTRUCTION
CONVERSION
COST BENEFIT ANALYSIS
DESIGN
ECONOMICS
ENERGY CONVERSION
FLUIDS
FREONS
G CODES
GEOTHERMAL ENERGY CONVERSION
GEOTHERMAL POWER PLANTS
Geothermal Legacy
HALOGENATED ALIPHATIC HYDROCARBONS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OPERATION
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER PLANTS
RANKINE CYCLE
REFRIGERANTS
SIMULATION
STEAM GENERATORS
THERMAL POWER PLANTS
THERMODYNAMIC CYCLES
THERMODYNAMIC PROPERTIES
VAPOR GENERATORS
WORKING FLUIDS