Electrical Production From Moderate Temperature Geothermal Brines

[+] Author and Article Information
H. R. Jacobs, R. F. Boehm

University of Utah, Salt Lake City, Utah 84112

J. Energy Resour. Technol 101(2), 134-140 (Jun 01, 1979) (7 pages) doi:10.1115/1.3446903 History: Received August 25, 1978; Revised February 26, 1979; Online August 19, 2010


Direct contact binary cycles may be used to develop electrical power from moderate temperature geothermal brines. For a simple Rankine cycle using direct contact heat exchangers isobutane is preferred as a working fluid for brines at temperatures greater than 138°C. Pentane appears more attractive at lower temperatures. For all moderate temperature application, however, the use of bottoming cycles, multi-turbine, multi-fluid cycles, yields significantly better performance.

Copyright © 1979 by ASME
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