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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Simulation on the Optimal Performance and Effective Operating Range of a 2-Stage Compression Heat Pump Using River Water

하천수 열원 이용 2단압축 열펌프의 최적성능 및 효용 운전범위에 관한 시뮬레이션 연구

  • Jung, Tae-Hun (Graduate School of Mechanical Engineering, Korea University) ;
  • Park, Cha-Sik (Department of Automotive Engineering, Hoseo University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
  • 정태훈 (고려대학교 기계공학과 대학원) ;
  • 박차식 (호서대학교 자동차공학과) ;
  • 김용찬 (고려대학교 기계공학과)
  • Published : 2008.05.10
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Abstract

The objectives of this study are to predict actual system performance and effective operating range of the 2-stage compression heat pump system using river water. An electronic expansion valve was applied to the simulation to analyze the effects of operating conditions on the system performance. The developed program was verified by comparing the predictions with the measured data. The results from the present model showed a good agreement with the measured data. In addition, the heat pump simulation was conducted by increasing condenser reservoir inlet temperature to investigate the benefits of the 2-stage compression over the 1-stage compression in the heating mode. The performance of the 2-stage compression cycle was better than that of the 1-stage compression when the inlet temperature of the condenser reservoir was higher than $40^{\circ}C$.

Keywords

References

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