竖直双U型埋管地热换热器支管间热短路分析  

Analysis of thermal interference between pipes of double U-tube geothermal heat exchanger

作　　者：范军[1,2] 胡玉秋[2] 孙奉仲[1] 刘惠[2] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]山东农业大学水土学院,山东泰安271018

出　　处：《可再生能源》2011年第4期95-97,共3页Renewable Energy Resources

摘　　要：采用地热换热器准三维传热模型和数值计算的方法,对竖直双U型埋管地热换热器支管间的热短路进行了分析,讨论了管间距和回灌材料的导热系数对热短路的影响,并提出了减少热短路的措施。Quasi-3D model and numerical simulation method were used to analyze thermal interfer- ence between pipes of double U-tube geothermal heat exchanger. Intervals of pipes and heat conduc- tivity of borehole grout were studied to discuss their influences on thermal interference. Then measures for reducing thermal interference were proposed.

关 键 词：地源热泵 双U型管 地热换热器 热短路 

分 类 号：TK529[动力工程及工程热物理—热能工程]