Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Experimental Study on the Performance of a Simultaneous Heating and Cooling Heat Pump in the Heat Recovery Mode

동시냉난방 열펌프의 전열회수 성능 특성에 관한 연구

  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Chung, Hyun-Joon (Graduate School of Mechanical Engineering, Korea University) ;
  • Joo, Young-Ju (Graduate School of Mechanical Engineering, Korea University) ;
  • Kang, Hoon (Department of Mechanical Engineering, Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
  • 최종민 (한밭대학교 기계공학과) ;
  • 정현준 (고려대학교 기계공학과 대학원) ;
  • 주영주 (고려대학교 기계공학과 대학원) ;
  • 강훈 (고려대학교 기계공학과) ;
  • 김용찬 (고려대학교 기계공학과)
  • Published : 2008.11.10
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Abstract

The cooling load in winter is significant in buildings and hotels because of the usage of office equipments and the high efficiency of wall insulation. Hence, the development of a multi-heat pump that can cover heating and cooling simultaneously for each indoor unit is required. In this study, the performance of a simultaneous heating and cooling heat pump was investigated in the heat recovery mode (HR mode). The system adopted a variable speed compressor using R410A with four indoor units and one outdoor unit. In the HR mode, the capacity and COP were improved as compared with those in the cooling or heating mode because the waste heat in the outdoor unit was utilized as useful heat in the indoor units. However, energy imbalance between heating and cooling capacity of each indoor unit was observed in the 2H-1C HR mode. Therefore, the performance of the system in the 2H-1C HR mode was enhanced by controlling refrigerant flow rate through the outdoor unit.

Keywords

References

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