Supercritical Cycle Gas Turbine Power Plant Utilize Geothermal Water Energy PUBLIC ACCESS

[+] Author Affiliations
A. V. Pradhan

Borg-Warner Corp., Bedford, OH

Paper No. 70-GT-60, pp. V01AT01A060; 9 pages
  • ASME 1970 International Gas Turbine Conference and Products Show
  • Volume 1A: General
  • Brussels, Belgium, May 24–28, 1970
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7985-6
  • Copyright © 1970 by ASME


This paper presents a closed cycle gas turbine power plant to utilize low temperature and low quality geothermal steam and water, that cannot be utilized in a steam turbine type of power plant. Fluids which have critical temperatures below 300 F, the usual geothermal water temperatures, can be utilized. This paper compares performances of power cycles using various fluids and establishes that carbon dioxide is the most suitable fluid for this application. The paper then compares performances of carbon dioxide cycles and establishes the best thermodynamic region for cycle operation. The generalized characteristics approach was used to analyze cycle performances and is briefly presented. It enables quick comparisons to be made for selection of an optimum cycle. The paper then considers a 2000-kw power plant operating on a closed CO2 cycle, establishes the geothermal water requirements and the system design. System control, and start-up problems are also discussed.

Copyright © 1970 by ASME
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