Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Performance Analysis of Ammonia-Water Regenerative Rankine Cycles for Use of Low-Temperature Energy Source

저온 열원 활용을 위한 암모니아-물 재생 랭킨 사이클의 성능 해석

  • Kim, Kyoung-Hoon (School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Han, Chul-Ho (School of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김경훈 (금오공과대학교 기계공학부) ;
  • 한철호 (금오공과대학교 기계공학부)
  • Received : 2010.10.20
  • Accepted : 2011.01.12
  • Published : 2011.02.28
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Abstract

It is a great interest to convert more energy in the heat source into the power and to improve the efficiency of power generating processes. Since the efficiency of power generating processes becomes poorer as the temperature of the source decreases, to use an ammonia-water mixture instead of water as working fluid is a possible way to improve the efficiency of the system. In this work performance of ammonia-water regenerative Rankine cycle is investigated for the purpose of extracting maximum power from low-temperature waste heat in the form of sensible energy. Special attention is paid to the effect of system parameters such as mass fraction of ammonia and turbine inlet pressure on the characteristics of system. Results show that the power output increases with the mass fraction of ammonia in the mixture, however workable range of the mass fraction becomes narrower as turbine inlet pressure increases and is able to reach 16.5kW per unit mass flow rate of source air at $180^{\circ}C$.

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  1. Exergy Analysis of Regenerative Ammonia-Water Rankine Cycle for Use of Low-Temperature Heat Source vol.23, pp.1, 2012, https://doi.org/10.7316/khnes.2012.23.1.65
  2. 저온 열원 발전을 위한 암모니아-물 랭킨 사이클과 칼리나 사이클의 성능특성의 비교 해석 vol.29, pp.2, 2011, https://doi.org/10.7316/khnes.2018.29.2.148