Experimental Study on Heating Performance by Operation Combination of Heat Pump with 3 Indoor-Units

3실 열펌프의 운전조합에 대한 난방성능 실험연구

  • Kim, Ju-Hyung (Department of Mechanical Engineering, Korea Polytechnic University) ;
  • Kim, Ki-Young (Department of Mechanical Engineering, Sunmoon University) ;
  • Kwon, Young-Chul (Department of Mechanical Engineering, Sunmoon University) ;
  • Park, Seung-Chul (Department of Mechanical Engineering, Korea Polytechnic University)
  • 김주형 (한국산업기술대학교 기계공학과) ;
  • 김기영 (선문대학교 기계공학과) ;
  • 권영철 (선문대학교 기계공학과) ;
  • 박승철 (한국산업기술대학교 기계공학과)
  • Received : 2013.08.12
  • Accepted : 2013.09.06
  • Published : 2013.09.30


In order to investigate the heating performance of multi-heat pump applying an inverter compressor, the experiment on heat pump with 3 indoor units was performed under the heating standard and heating low-temperature conditions. The performance data of heat pump with 3 indoor units were measured by the multi-psychrometric calorimeter. The operation characteristics and the behavior of the refrigerant cycle of the heat pump with 3 indoor units were understood from the heating capacity, heating COP, and P-h diagram by indoor-unit combination. The present experimental results show that the operating load and performance of the multi-heat pump depends on the indoor-unit combination. The heating capacity and heating COP of the low temperature condition were smaller than those of the standard one. Also the refrigerant cycles on indoor-unit combination were analyzed by using P-h diagram.


COP;Capacity;Heating;Heat pump;Indoor-unit;P-h diagram


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