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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Cooling and Heating Performance of a Residential Ground Source Heat Pump System

가정용 지열원 열펌프 시스템의 냉난방 성능 특성 연구

  • Kong, Hyoung Jin (Geothermal Energy Education Center, Hoseo University) ;
  • Kang, Sung Jae (Renewable Environmental Division, Shinsung Engineering) ;
  • Yun, Kyoung Sik (Graduate School of Mechanical Engineering, Hoseo University) ;
  • Lim, Hyo Jae (Department of Mechanical Engineering, Hoseo University)
  • 공형진 (지열인력양성센터) ;
  • 강성재 (신성엔지니어링 신재생환경사업부) ;
  • 윤경식 (호서대학교 기계공학과 대학원) ;
  • 임효재 (호서대학교 기계공학과)
  • Received : 2012.08.02
  • Published : 2013.03.10
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Abstract

Ground Source Heat Pump (GSHP) systems utilize geothermal energy as a thermal source or sink, for heating, cooling and domestic hot water. It is well known that GSHP is environmentally friendly, and saves energy dramatically. For this reason, many investigative researches have been conducted on commercial and governmental buildings. However, studies on residential GSHP are few, because of the small capacity and cost. In this study, we experimented with the characteristic performance of heating, cooling and seasonal performance factor for a residential GSHP system, which consisted of two 180 m deep u-tube ground heat exchangers, a heat pump and measurement instruments. The installed capacity of the heat pump was 5RT, and the conditioning area was $62.23m^2$. From the experimental results, the cooling COP of the heat pump was 4.13, and the system COP was 3.51, while the CSPF was 3.32. On the other hand, the heating COP of the heat pump was 3.87, and the system COP was 3.39, while the HSPF was 3.39. Also, in-situ cooling COP and capacity were 93.7% and 96.4% compared with the EWT certification data, respectively, and that of heating were 98.3% and 95.7%, respectively.

Keywords

References

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  1. Heating and Cooling Performance Analysis of Ground Source Heat Pump System in Low Energy House vol.28, pp.10, 2016, https://doi.org/10.6110/KJACR.2016.28.10.387