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 Heating Performance of Heat Pump Chiller under Overload, Frost and Defrost Conditions

과부하 및 착.제상 조건에서 히트펌프 칠러의 난방성능에 관한 실험 연구

  • Kim, Jung-Seok (Graduate School, Department of Mechanical Engineering, Sunmoon University) ;
  • Kwon, Young-Chul (Department of Mechanical Engineering, Sunmoon University) ;
  • Chun, Chong-Keun (Department of Mechanical Engineering, Sunmoon University) ;
  • Park, Sam-Jin (Department of Mechanical Engineering, Sunmoon University) ;
  • Han, Hwa-Taik (School of Mechanical Engineering, Kookmin University)
  • Received : 2010.11.30
  • Accepted : 2011.05.19
  • Published : 2011.07.10
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Abstract

In the present study, the performance characteristics of the heat pump chiller under heating conditions were experimentally investigated. Capacity, input power and COP under overload, frost and defrost conditions were obtained. The experimental data for the heat pump chiller were measured using the air-enthalpy calorimeter and the constant temperature water bath. At overload condition, the heating capacity and COP increase about 25.7% and 19.1%, respectively. The variations of the evaporator, the compressor outlet and the condenser temperature were obtained under frost and defrost conditions. The frost and defrost period of the heat exchanger decreases about 36.0~56.1%.

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References

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