Moldular wellhead binary power system: Preliminary design results

Technical Report · Sat Sep 01 04:00:00 EDT 1990

OSTI ID:6551061

The modular wellhead binary power system is a binary cycle power plant consisting of equipment packaged in modules for application at geothermal wellhead sites. The power system is intended for installation at various geothermal power plant sites with different types of geothermal resource fluid that range from low temperature (300{degree}F to 375{degree}F) brine to a mixture of high temperature (400{degree}F to 450{degree}F) steam and brine. Seven modular configurations, four water-cooled and three air-cooled, were selected for the purpose of developing their detailed engineering and design. Development of the detailed design of the seven configurations falls under Phase 1 of EPRI's plan to implement the modular wellhead binary power system. Preliminary engineering analyses and design were performed on the mechanical and electrical systems. A computer program was developed to predict the performance of the seven modular configurations and to determine the preliminary sizes of the various equipment for the different types and conditions of the geothermal resource, operating under various ambient conditions. Performance curves and tables were generated from the results of the mechanical systems analyses to determine the range of power output of the various modular configurations under selected combinations of conditions. The net power outputs determined from the normal design condition analyses range from a low of 2688 KW (specific output of 4.69 W-hr/lb) for an air-cooled system which utilizes a low temperature steam/brine mixture, to a high of 5334 KW (specific output of 10.42 W-hr/lb) for a water-cooled system which utilizes a high temperature steam/brine mixture. The analyses also indicated that the power outputs will vary according to the variations in the geothermal resource and ambient conditions. 21 refs., 2 figs., 1 tab.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Pacific Gas and Electric Co., San Francisco, CA (USA). Dept. of Mechanical and Nuclear Engineering
• Sponsoring Organization: EPRI
• OSTI ID: 6551061
• Report Number(s): EPRI-GS-6890
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
BINARY-FLUID SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
COST
DOCUMENT TYPES
ECONOMICS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
GEOTHERMAL POWER PLANTS
GEOTHERMAL WELLS
Geothermal Legacy
MANUFACTURERS
MECHANICAL STRUCTURES
MODULAR STRUCTURES
PIPES
POWER PLANTS
PROGRESS REPORT
SPECIFICATIONS
STRESS ANALYSIS
THERMAL POWER PLANTS
VALVES
WELLS