Taking an office building in Changsha city, Hunan Province as the research object, its all-year hourly dynamic load is simulated by EnergyPlus software. On this basis, a simulation model of U-tube ground heat exchangers is built with the GSHP design software of GLD2012. The heat balance problem of the ground source heat pump (GHSP) system in long-term operation is discussed from influencing factors of soil thermophysical parameters and backfill materials' thermal conductivity. The simulation results are analyzed to show the reference to the optimal desi...
