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http://dx.doi.org/10.6110/KJACR.2012.24.6.487

Performance Analysis of Energy-Slab Ground-Coupled Heat Exchanger  

Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University)
Sohn, Byong-Hu (Green Building Research Division, Korea Institute of Construction Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.24, no.6, 2012 , pp. 487-496 More about this Journal
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.
Keywords
Energy-slab; Building foundation; Ground-coupled heat exchanger; Geothermal heat pump; Performance;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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