| Title |
Performance Prediction of Geothermal Heat Pump(GHP) System with Energy Piles Using Simulation Approach |
| Authors |
손병후(Byonghu Sohn) ; 최종민(Jong Min Choi) |
| DOI |
http://dx.doi.org/10.6110 /KJACR.2012.24.2.155 |
| Keywords |
에너지파일 ; 건물 기초 ; 지열 히트펌프 시스템 ; 냉난방 성능 Energy pile ; Building foundation ; Geothermal heat pump system ; Cooling and heating performance |
| Abstract |
The aim of this study is to evaluate the performance of the GHP system with 150 energy piles for a commercial building. In order to demonstrate the feasibility of a sustainable performance of the system, simulations were conducted over 1-year and 20-year periods, respectively. The 1-year simulation results showed that the maximum and minimum temperatures of brine returning from the energy piles were 23.80℃ and 7.90℃, which were in a range of design target temperatures. In addition, after 20 years’ operation, these returning temperatures decreased slowly to 23.05℃ and 6.98℃, and finally reached to stable state. The results also showed that the energy piles injected heat of 65.6 MWh to the ground and extracted heat of 96.0 MWh from the ground, respectively. Also, it is expected this GHP system with energy piles can operate with average SPF of more than 4.15 for long term. |