Experimental study on thermal response of double U-type buried tube heat exchanger in southern Hebei Province
The field thermal response test of a double-U-type buried tube heat exchanger in an industrial park in Cixian County,Handan City is carried out to analyze the heat transfer performance of the ground source heat pump system in this area.The test is carried out at a depth of 120 m.The results show that the original average temperature of the soil in this area is 18.01 ℃,and the average thermal conductivity is 2.098 W/(m·K).Based on the test data,the conversion analysis of the heat transfer capacity of the buried tube heat exchanger under the design working condition is carried out:under the summer working condition(the average temperature of supply and return water is 32.5 ℃),the reference value of heat emission per unit of a meter is 63.065 W/m;Under winter conditions(the average temperature of water supply and return is 6 ℃),the reference value of heat extraction per unit extension meter is 52.24 W/m.The research results could provide reference for the reasonable design of ground source heat pump system in Cixian county of Handan City.
万方数据
维普
