The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Performance Variation of a Combined Cycle Power Plant by Coolant Pre-cooling and Fuel Pre-heating

냉각공기 예냉각과 연료예열에 의한 복합발전 시스템의 성능변화

  • Received : 2011.10.31
  • Accepted : 2012.02.14
  • Published : 2012.06.01
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Abstract

Effects of coolant pre-cooling and fuel pre-heating on the performance of a combined cycle using a F-class gas turbine were investigated. Coolant pre-cooling results in an increase of power output but a decrease in efficiency. Performance variation due to the fuel pre-heating depends on the location of the heat source for the pre-heating in the bottoming cycle (heat recovery steam generator). It was demonstrated that a careful selection of the heat source location would enhance efficiency with a minimal power penalty. The effect of combining the coolant pre-cooling and fuel pre-heating was also investigated. It was found that a favorable combination would yield power augmentation, while efficiency remains close to the reference value.

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