焦作市某服务区地源热泵系统地下温度场模拟研究

Ground Temperature Simulation for Ground Source Heat Pump:A case study for a service center in Jiaozuo

利用GLD软件对河南省焦作市某高速公路服务区地源热泵系统长期运行工况下的地下温度场进行模拟分析,得出当土壤中长期积累的热量无法排出时,将导致土壤温度上升,进而影响地源热泵系统的换热性能。根据模拟结果,分析了地源热泵系统长期运行过程中不同的建筑冷热不平衡率及钻孔间距对地下温度场的影响。针对地源热泵系统运行所引起的地下温度场的失衡问题提出了部分有效解决措施。

This paper presents the simulation and analysis for the long-time prediction of ground temperature with ground source heat pump system.The commercial Ground Loop Design（GLD）software is utilized in the simulation and a case for a service center of expressway in Jiaozuo,Henan Province is studied.The results show that the ground temperature rise mainly results from the accumulated heat in the ground,and the change affects the heat exchange performance of GSHP system.The factors influencing ground temperature are discussed based on the simulating results,including the unbalance ratio of building＇s cooling and heating load and distance of boreholes.Some effective measures are proposed to stabilize the ground temperature.