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 Heat Recovery Heat Pump System using R245fa Refrigerant

R245fa 냉매를 이용한 배열회수 히트펌프 시스템 성능에 관한 실험적 연구

  • Kim, Hyuntaek (Department of Mechanical Engineering, Graduate School of Korea University) ;
  • Kim, Yongchan (Department of Mechanical Engineering, Korea University) ;
  • Cha, Dongan (Thermal & Fluid System Group, Korea Institute of Industrial Technology) ;
  • Kwon, Ohkyung (Thermal & Fluid System Group, Korea Institute of Industrial Technology)
  • 김현택 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학과) ;
  • 차동안 (한국생산기술연구원 열유체시스템그룹) ;
  • 권오경 (한국생산기술연구원 열유체시스템그룹)
  • Received : 2016.06.03
  • Accepted : 2016.09.12
  • Published : 2016.10.10
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Abstract

The objective of this study is to investigate the performance of a heat recovery heat pump dryer using a R245fa refrigerant experimentally. In this study, the main components of the heat pump dryer were an evaporator, a compressor, a condenser, and an expansion valve. As a result, when the amount of refrigerant varied from 15 kg to 16 kg, the hot air outlet temperature in the condenser and the heat transfer rate were almost kept constant. Therefore, the amount of refrigerant at 16 kg was considered to be a suitable amount in the heat pump. As the air inlet velocity varied from 0.5 m/s to 1.5 m/s, the highest temperature in the condenser could be obtained when the air inlet velocity was 0.5 m/s. The heat transfer rate, system (COP), and hot air outlet temperature were 5.6 kW, 3.4, and $102.5^{\circ}C$, respectively, when the bypass ratio and water temperature were 0% and $60^{\circ}C$.

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References

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