Experimental Study on Thermal Response and Heat Transfer of Ground Heat Exchanger

摘要

An experiment apparatus for ground heat exchanger (GHE) based on similarity principle and actual thermal response test (TRT) was established.The experiments were conducted on different impact factors that influence the thermal response and heat transfer of GHE,such as heating power,circulating flow rate,testing time and groundwater seepage.It's found that all of the factors have great impact on the heat transfer of the GHE,especially the groundwater seepage.It is necessary to consider these factors in TRT and design of ground source heat pump (GSHP) system.