A novel experimental setup with sand trunk for heat extraction of geothermal heat exchanger  

作　　者：姜益强 姚杨 陈益明 马最良 

机构地区：[1]School of Municipal and Environmental Engineering,Harbin Institute of Technology [2]Dept.of Building Service Engineering,Hong Kong Polytechnic University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2008年第6期809-813,共5页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No. 50378024)

摘　　要：A novel experimental setup was developed to study the heat extraction of geothermal heat exchanger(GHE)in different operational modes under adiabatic and isothermal boundaries.The experimental setup consists of a sand trunk,a tailored water chiller,a natural cold source unit,two water boxes containing hot water and cool water,and a data acquisition system.The experimental results indicate that the volume flow rate of the entering water is a main factor affecting the heat extraction;furthermore,the heat extraction value per meter pipe decreases gradually along the heat extraction pipe and increases with the increase of the incoming water volume flow rate.Therefore,this novel experimental setup may be helpful to further study the operation performance of GHE in different types of soil.A novel experimental setup was developed to study the heat extraction of geothermal heat exchanger （GHE） in different operational modes under adiabatic and isothermal boundaries. The experimental setup consists of a sand trunk, a tailored water chiller, a natural cold source unit, two water boxes containing hot water and cool water, and a data acquisition system. The experimental results indicate that the volume flow rate of the entering water is a main factor affecting the heat extraction; furthermore, the heat extraction value per meter pipe decreases gradually along the heat extraction pipe and increases with the increase of the incoming water volume flow rate. Therefore, this novel experimental setup may be helpful to further study the operation performance of GHE in different types of soil.

关 键 词：heat extraction GHE experimental setup sand trunk 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]