复合材质地埋管换热器匹配参数设计及应用性能比较  

The design of matched parameter and performance comparison of a composite material buried pipe heat exchanger

作　　者：申思 李秀英[1] 梁艳[1] SHEN Si;LI Xiuying;LIANG Yan(College of science and engineering of Xi’an Siyuan University,Xi’an 710038,China)

机构地区：[1]西安思源学院理工学院,陕西西安710038

出　　处：《粘接》2023年第9期179-182,共4页Adhesion

基　　金：2022年度陕西省教育厅科研计划项目(项目编号:2022JK0516)。

摘　　要：通过对复合管材换热器进行重新设计,对比了复合管材和常规PE管在不同地质条件、不同回填材料和极端工况下的换热性能,并对复合管材换热器的经济性进行评估。实验结果表明:使用复合管材的地埋管换热器比使用PE管的换热效果好,理论热阻和模拟热阻差值超过18.0%;土壤和回填材料的导热性能越高,复合管材的性能增益率越高,均超过10%;在2种极端工况下,复合管材的日平均换热功率分别比PE管高出16.9%和7.2%;复合管材换热器的经济性最高,比石墨管和不锈钢换热器节省了25%和19.6%;为地埋管换热器的设计选型和节能优化提供了参考依据。By redesigning the composite tube heat exchanger,the heat transfer performance of the composite tube and conventional PE tube has been compared under different geological conditions,different backfill materials,and extreme operating conditions.The economic feasibility of the composite tube heat exchanger has also been evaluated.The experimental results showed that the buried heat exchanger using composite pipes had better heat transfer performance than the one using PE pipes,with a difference of over 18.0%in both theoretical and simulated thermal resistance.The higher the thermal conductivity of soil and backfill materials,the greater the performance gain rate of composite pipes was,both exceeding 10%;Under two extreme operating conditions,the daily average heat transfer power of composite pipes was 16.9%and 7.2%higher than that of PE pipes,respectively;The composite tube heat exchanger had the highest economic efficiency,saving 25%and 19.6%compared to graphite tube and stainless steel heat exchangers,making it an efficient heat exchange equipment.This article provides a reference basis for the design,selection,and energy-saving optimization of buried tube heat exchangers.

关 键 词：复合管材 换热器 换热性能 参数设计 性能比较 

分 类 号：TK529[动力工程及工程热物理—热能工程] TQ051.5[化学工程]