Combined cycles for hybrid fossil/geothermal power generation

H. Ezzat Khalifa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The paper presents a preliminary technical and economic assessment of a combined cycle in which the bottoming cycle is fed both by the exhaust energy from a combustion engine topping loop and by moderate- temperature energy from a geothermal resource. It is shown that this arrangement offers significant performance and economic advantages over the separate utilization of the two energy inputs. A gas-turbine-topped dual pressure toluene bottoming system matched to a 300 F (-150 C) hydrothermal resource can produce 10 to 20% more power than would be obtained from two separate plants; a conventional flash or binary power plant for the geothermal fluid, and a 35%-efficient combustion power plant for the oil or natural gas burned in the topping loop. The superior performance of the hybrid plant results in a commensurate reduction in the cost of electricity.

Original languageEnglish (US)
Title of host publication1983 Joint Power Generation Conference
Subtitle of host publicationGT Papers, JPGC 1983
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791879368
DOIs
StatePublished - Jan 1 1983
Event1983 Joint Power Generation Conference: GT Papers, JPGC 1983 - Indianapolis, United States
Duration: Sep 25 1983Sep 29 1983

Publication series

NameProceedings of the ASME Turbo Expo
Volume1983-January

Other

Other1983 Joint Power Generation Conference: GT Papers, JPGC 1983
CountryUnited States
CityIndianapolis
Period9/25/839/29/83

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Khalifa, H. E. (1983). Combined cycles for hybrid fossil/geothermal power generation. In 1983 Joint Power Generation Conference: GT Papers, JPGC 1983 (Proceedings of the ASME Turbo Expo; Vol. 1983-January). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/83JPGCGT2