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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Energy and Exergy Analysis of Kalina Based Power and Cooling Combined Cycle

칼리나 사이클을 기반으로 하는 동력 및 냉동 복합 사이클의 에너지 및 엑서지 성능 해석

  • KIM, KYOUNG HOON (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • JUNG, YOUNG GUAN (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • KO, HYUNG JONG (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 김경훈 (금오공과대학교 기계공학과) ;
  • 정영관 (금오공과대학교 기계공학과) ;
  • 고형종 (금오공과대학교 기계공학과)
  • Received : 2020.03.31
  • Accepted : 2020.04.30
  • Published : 2020.04.30
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Abstract

The Kalina cycle (KC) is considered as one of the most efficient systems for recovery of low grade heat. Recently, Kalina based power and cooling cogeneration cycles (KPCCCs) have been suggested and attracted much attention. This paper presents an energy and exergy analysis of a recently suggested KPCCC with flexible loads. The cycle consists of a KC (KCS-11) and an aqua-ammonia absorption refrigeration cycle. By adjusting the splitting ratios, the cycle can be operated with four modes of pure Kalina cycle, pure absorption cooling cycle, Kalina-cooling parallel cycle, and Kalina-cooling series cycle. The effects of system variables and the operating modes on the energetic and exergetic performances of the system are parametrically investigated. Results show that the system has great potential for efficient utilization of low-grade heat source by adjusting loads of power and cooling.

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References

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