Soil heat source method for long-term simulation of ground-source heat pump

Based on the analysis of conventional long-term numerical simulation method—heat transfer of tube group method for soil-source heat pump, puts forward a soil heat source method. For the two simulation methods, the simulation results indicate that the change of soil temperature field and annual change rate of tube group area are quite similar, with the number of grid with the soil heat source method being reduced to only 1/8 of that with the heat transfer of tube group method, simplifying the simulation process and shortening the time needed.