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

  • 제30권6호
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  • Pages.621-628
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  • 2019
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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암모니아-물 랭킨사이클의 증발기에서의 엑서지 및 엔트랜시 성능 특성 해석

Performance Characteristics Analysis of Evaporator in Ammonia-Water Rankine Cycle Based on Exergy and Entransy

  • 김경훈 (금오공과대학교 기계공학과) ;
  • 정영관 (금오공과대학교 기계공학과)
  • KIM, KYOUNG HOON (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • JUNG, YOUNG GUAN (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 투고 : 2019.09.29
  • 심사 : 2019.12.30
  • 발행 : 2019.12.30
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초록

The use of the ammonia-water zeotropic mixture as a working fluid in the power generating system has been considered as a proven technology for efficient recovery of low-grade heat sources. This paper presents a thermodynamic performance analysis for ammonia-water evaporator using low-grade heat source, based on the exergy and entransy which has been recently introduced as a physical quantity to describe the heat transfer ability of an object. In the analysis, effects of the ammonia mass fraction and source temperature of the binary mixture are investigated on the system performance such as heat transfer, effectiveness, exergy destruction, entransy dissipation, and entransy dissipation based thermal resistance. The results show that the ammonia mass concentration and the source temperature have significant effects on the thermodynamic system performance of the ammonia-water evaporator.

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참고문헌

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