STUDY ON TEMPERATURE FIELD ROUND VERTICAL BURIED PIPE OF GROUND SOURCE HEAT PUMP IN INTERMITTENT OPERATION

Heat transfer between soil and cooling water in buried pipes is presented, thus ground source heatpump can realize the transfer from low-grade energy to high-grade energy. We tested Watertemperature and flow rate of the buried pipe of Ground source heat pump system under intermittentoperation condition in Qingdao, temperature field of vertical buried double-U pipes is analyzed bythree-dimensional numerical model.