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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance Analysis of Energy-Slab Ground-Coupled Heat Exchanger

에너지슬래브 지중열교환기의 성능 분석

  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Sohn, Byong-Hu (Green Building Research Division, Korea Institute of Construction Technology)
  • 최종민 (국립 한밭대학교 기계공학과) ;
  • 손병후 (한국건설기술연구원 그린빌딩연구실)
  • Received : 2012.03.05
  • Published : 2012.06.10
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Abstract

Recently, utilization of building foundations as ground-coupled heat exchangers has attracted much attention because they reduce the cost and enhance the heat transfer. The objective of this study is to evaluate the performance of energy-slab ground-coupled heat exchanger installed in a commercial building. In order to demonstrate the energy transfer characteristics of the energy-slab, experiments were conducted from October 2010 to September 2011. The 1-year measurement results showed that the mean EWTs of brine returning from the energy-slab were $9.6^{\circ}C$ in heating season and $24.9^{\circ}C$ in cooling season, which were in a range of design target temperatures. In addition, the geothermal heat pump system with the energy-slab showed on-off operation according to the setting temperatures of secondary fluid in water storage tank. The results also showed that the energy-slab extracted heat of 198.6 kW from the ground and injected heat of 318.9 kW to the ground, respectively.

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References

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