Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Exergy Analysis of Gas Turbine System Depending on Steam Injection Method

증기 분사 방식에 따른 가스터빈 시스템의 엑서지 해석

  • MIJIDDORJ, DASHTSEDEN (Graduate School of Kumoh National Institute of Technology) ;
  • LIM, SOK KYU (Graduate School of Kumoh National Institute of Technology) ;
  • JUNG, YOUNG GUAN (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • KIM, KYOUNG HOON (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 다시카 (금오공과대학교 대학원) ;
  • 임석규 (금오공과대학교 대학원) ;
  • 정영관 (금오공과대학교 기계공학과) ;
  • 김경훈 (금오공과대학교 기계공학과)
  • Received : 2017.09.13
  • Accepted : 2017.10.19
  • Published : 2017.10.30
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Abstract

Gas turbine system with steam injection has shown outstanding advantages such as high specific power and NOx reduction. In the present work, a comparative exergetic analysis was carried out for Steam Injected Gas Turbine (STIG), Regenerative Steam Injected Gas Turbine (RSTIG), and Regenerative After Fogging Gas Turbine (RAF). Effects of pressure ratio, steam injection ratio and steam injection method on the system performance was theoretically investigated. The results showed that the order of the highest exergy efficiency is RSTIG, RAF, and STIG for low pressure ratios but STIG, RSTIG, and RAF for high pressure ratios. In each arrangement, the combustion chamber has the highest exergy destruction and the compressor has the second one.

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References

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