| Title |
Performance Analysis of Energy-Slab Ground-Coupled Heat Exchanger |
| Authors |
최종민(Jong Min Choi) ; 손병후(Byonghu Sohn) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2012.24.6.487 |
| Keywords |
에너지슬래브 ; 건물 기초 ; 지중열교환기 ; 지열 히트펌프 ; 성능 Energy-slab ; Building foundation ; Ground-coupled heat exchanger ; Geothermal heat pump ; Performance |
| 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℃ in heating season and 24.9℃ 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. |