DOE/EPRI hybrid power system

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6914039

Stiger, S G; Taylor, K J; Hughes, E E

One of the primary objectives of the DOE Geopressured Geothermal Program is to improve methods for optimum energy extraction from geopressured reservoirs. Hybrid power systems which take advantage of the chemical and thermal energy content of geopressured fluids could improve conversion efficiency by 15 to 20% over the same amount of fuel and geothermal fluid processed separately. In a joint DOE/EPRI effort, equipment from the Direct Contact heat Exchange test facility at East Mesa is being modified for use in a unique geopressured hybrid power plant located at the Pleasant Bayou wellsite in Brazoria County, TX. Natural gas separated at the wellhead will fuel a gas turbine, and exhaust heat from the engine will be used with the geothermal brine to vaporize isobutane in a binary power cycle. The hybrid power system is designed for 10,000 bbl/day brine flow, with estimated power production of 980 kW (net). In addition to evaluating the enhanced performance resulting from the combined power generation cycles, operation of the hybrid unit will provide a demonstration of fuel flexibility in an individual plant. This approach would allow a resource developer to reduce costs and risks by optimizing production for various economic climates and would improve the mix in a utility's generating system. 5 refs., 2 figs.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6914039
• Report Number(s): EGG-M-88133; CONF-880477-8; ON: DE88015109
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150800* -- Geothermal Power Plants
CONVERSION
DESIGN
DIAGRAMS
ECONOMICS
EFFICIENCY
ENERGY CONVERSION
ENERGY SOURCES
FLOWSHEETS
FLUID FLOW
FLUID MECHANICS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOTHERMAL ENERGY CONVERSION
GEOTHERMAL POWER PLANTS
GEOTHERMAL WELLS
Geothermal Legacy
HEAT EXCHANGERS
HYBRID SYSTEMS
HYDRAULICS
MECHANICS
NATURAL GAS
PERFORMANCE
POWER PLANTS
THERMAL POWER PLANTS
WELLS