Hybrid Cooling for Geothermal Power Plants: Final ARRA Project Report

Bharathan, D.

National Renewable Energy Laboratory (U.S.)

关键词: Power Plant Cooling;    Air-Cooled Condensers;    Geothermal Energy;    Heat Transfer;    Finned-Tube;   

DOI  :  10.2172/1086347
RP-ID  :  NREL/TP-5500-58024
RP-ID  :  AC36-08GO28308
RP-ID  :  1086347

美国|英语

来源: UNT Digital Library

【 摘 要 】

Many binary-cycle geothermal plants use air as the heat rejection medium. Usually this is accomplished by using an air-cooled condenser (ACC) system to condense the vapor of the working fluid in the cycle. Many air-cooled plants suffer a loss of production capacity of up to 50% during times of high ambient temperatures. Use of limited amounts of water to supplement the performance of ACCs is investigated. Deluge cooling is found to be one of the least-cost options. Limiting the use of water in such an application to less than one thousand operating hours per year can boost plant output during critical high-demand periods while minimizing water use in binary-cycle geothermal power plants.