Research of Ground Heat Balance of Ground Source Heat Pump

Based on the database of typical weather condition in northern cold region of China, this paper compares different function buildings’ cooling and heating load’s imbalance rate. The effect of different building functions on cooling and heating load is analyzed. On the above basis, underground heat exchanger pipe group model of ground source heat pump (GSHP) is established. As a monthly time step to change heat flux, the continuity change of soil temperature field around the tube is studied. Combined the above pipe group model, ‘soil representative accumulated temperature’ of buildings of different functions is obtained. According to this indicator, whether the GSHP is suitable for buildings of different function can be judged.