| Title |
Performance Prediction on the Application of a Ground-Source Heat Pump(GSHP) System in an Office Building |
| Authors |
손병후(Byonghu Sohn) ; 권한솔(Han Sol Kwon) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2014.26.9.409 |
| Keywords |
지열 히트펌프 시스템 ; 업무용 건물 ; 성능 예측 ; 시뮬레이션 ; 에너지플러스 ; 냉난방 Ground-source heat pump system ; Office building ; Performance prediction ; Simulation ; EnergyPlus ; Cooling and heating |
| Abstract |
Ground-source heat pump (GSHP) systems have become an efficient alternative to conventional cooling and heating methods due to their higher energy efficiency. These systems use the ground as a heat source and the heat sink for cooling mode operation. The purpose of this simulation study is to evaluate the performance of a hypothetical GSHP system in an office building and to assess the energy saving effect against the existing HVAC systems (boiler and turbo chiller). We collected monthly energy consumption data from an actual office building (32,488 m2) in Seoul, and created a model to calculate the hourly building loads with EnergyPlus. In addition, we used GLD (Ground Loop Design) V8.0, a GSHP system design and simulation software tool, to evaluate hourly and monthly performance of the GSHP system. The energy consumption for the GSHP system based on the hourly simulation results were estimated to be 582.6 MWh/year for cooling and 593.2 MWh/year for heating, while those for the existing HVAC systems were found to be 674.5 MWh/year and 2,496.4 MWh/year, respectively. The seasonal performance factor (SPF) of the GSHP system was also calculated to be in the range of 3.37∼4.28. |