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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on Cooling Characteristics of Ground Source Heat Pump with Variation of Water Switching and Refrigerant Switching Methods

수절환 및 냉매절환방식에 따른 지열히트펌프의 냉방특성에 관한 연구

  • Cha, Dong-An (Energy System R&D Group, Korea Institute of Industrial Technology) ;
  • Kwon, Oh-Kyung (Energy System R&D Group, Korea Institute of Industrial Technology) ;
  • Park, Cha-Sik (School of Mechanical Engineering, Hoseo University)
  • 차동안 (한국생산기술연구원 에너지시스템 연구그룹) ;
  • 권오경 (한국생산기술연구원 에너지시스템 연구그룹) ;
  • 박차식 (호서대학교 기계공학부)
  • Received : 2012.02.27
  • Published : 2012.08.10
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Abstract

The objective of this study is to investigate the influence of the cooling performance for a water-to-water 10 RT ground source heat pump by using the water switching and refrigerant switching method. The test of water-to-water ground source heat pump was measured by varying the compressor speed, load side inlet temperature, and ground heat source side temperature. The cooling capacity and refrigerant mass flow rate of the heat pump increased with increasing ground heat source temperature. But COP of the heat pump decreased with increasing ground heat source temperature. As a result, the water switching method with counter flow, compared to a refrigerant switching method, improves the cooling capacity and COP by approximately 6~9% in average, respectively.

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References

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