Journal of the Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회논문집)

Korean Society for Geothermal and Hydrothermal Energy (한국지열·수열에너지학회)
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Study on the Performance of a Variable Speed Cascade Heat Pump under Various Operating Conditions

운전조건에 따른 가변속 캐스케이드 열펌프의 성능 특성 연구

  • Jeong, Kwangmoo (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Choi, Jong Min (Department of Mechanical Engineering, Hanbat National University)
  • 정광무 (한밭대학교 기계공학과 대학원) ;
  • 최종민 (한밭대학교 기계공학과)
  • Received : 2013.04.05
  • Accepted : 2013.05.07
  • Published : 2013.06.01
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Abstract

Most researches done on heat pumps have been on heat pumps for refrigeration, cooling and heating. There is therefore the need for more research on hot water heat pumps, especially for high temperature. Even though the cascade heat pump cycle has a great potential more efficient hot water generation even at low evaporating temperatures, it has been researched least for this purpose. In this study, the heating performance of a variable speed cascade heat pump was investigated by varying operating conditions. For the same heating capacity values, it was found that increasing the low stage compressor speed was more suitable for enhancing the performance of the system to get a higher temperature.

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References

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