Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance Analysis of Regenerative Gas Turbine System with Afterfogging

압축기 출구 물분사가 있는 재생 가스터빈 시스템의 성능해석

  • Kim, Kyoung-Hoon (School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Kim, Se-Woong (School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Ko, Hyung-Jong (School of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김경훈 (금오공과대학교 기계공학부) ;
  • 김세웅 (금오공과대학교 기계공학부) ;
  • 고형종 (금오공과대학교 기계공학부)
  • Published : 2009.08.10
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Abstract

A performance analysis of the regenerative gas turbine system with afterfogging is carried out. Because of the high temperature at the outlet of air compressor, afterfogging has a potential of improved recuperation of exhaust heat than inlet fogging. Thermodynamic analysis model of the gas turbine system is developed by using an ideal gas assumption. Using the model, the effects of pressure ratio, water injection ratio, and ambient temperature are investigated parametrically on thermal efficiency and specific power of the cycle. The dependency of pressure ratio giving peak thermal efficiency is also investigated. The results of numerical computation for the typical cases show that the regenerative gas turbine system with afterfogging can make a notable enhancement of thermal efficiency and specific power. In addition, the peak thermal efficiency is shown to decrease almost linearly with ambient temperature.

Keywords

References

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