Experimental study on two important parameters in design of ground-source heat pump systems

In the design of ground-source heat pump (GSHP), the inlet water temperature and velocity of the media in the underground U-tube heat exchanger are very important for heat exchange rate. In the heat response experiment of a single well, with the variation of inlet temperature and velocity of the media, obtains the heat exchange rate per unit U-tube length, providing references for design of U-tube heat exchangers.