Energy-saving Analysis of a Hybrid Ground-coupled Heat Pump Project
Hybrid ground-coupled heat pump (HGCHP) uses a supplemental heat rejecter to dissipate extra thermal energy to guarantee underground soil heat balanee. In this paper, a HGCI-LP project in Nanjing of China was chosen to analysis the energy-saving properties in terms of the control strategies, the building envelope and the terminal air-conditioning system. This HGCHP system utilized a cooling tower (CT) and the borehole heat exchanger (BHE) to dissipate the sum heat flow in cooling season. The software EnergyPlus was employed to simulate the project and design the heat flow of CT and BHE. Then two feasible control strategies for the BHE and CT were proposed in this paper. The energy-saving potential of the building envelope was analyzed in terms of the surface color of the wall/roof. With the same terminal system, it was found that in cooling season the heat flow of the insulated building with black wall/roof is 1.2 times more than that with white. With the same insulated building and same gray wall/roof, it was concluded that the heat pumps units for primary air fan-coil system shows an annual energy consumption increase of 4.47x 107 KJ comparing to radiant floor system.
Hybrid ground-coupled heat pump Borehole heat ezchanger Energy-saving
Qin Xue Jiufa Chert Hongqi Zheng Weilai Qiao Erming An
School of Energy and Environment,Southeast University,Nanjing 210096,China
国际会议
The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)
南京
英文
436-443
2009-11-06（万方平台首次上网日期，不代表论文的发表时间）