Simulation of a two-stage absorption heat pump cycle using treated sewage

하수처리수 이용 흡수식 열펌프 사이클의 시뮬레이션

  • 이용화 (유한대학 건축설비과) ;
  • 신현준 (한국건설기술연구원 건설설비그) ;
  • 최국광 (인천대학교 기계공학과)
  • Published : 1999.05.01

Abstract

This paper concerns the study of a two-stage absorption heat pump cycle to utilize treated sewage. This two-stage cycle consists of coupling double-effect with parallel or series flow type and single effect cycle so that the first stage absorber and condenser produces hot water to evaporate refrigerant in the evaporator of the second stage. The effects of operating variables such as absorber temperature on the coefficient of performance have been studied for two-stage absorption heat pump cycle. The working fluid is lithium bromide and water solution. The efficiency of the two-stage absorption heat pump cycle has been studied and simulation results show that higher coefficient of performance could be obtained for the first stage with parallel flow type. The optimum ratio of solution distribution can be shown by considering the COP, the crystallization of solution and the generator temperature.

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