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地下水渗流对地埋管管群传热的影响 预览 被引量:7

Heat transfer analysis of groundwater seepage for multi-pipe heat exchanger of ground source heat pump
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摘要 建立了有地下水渗流时地源热泵地埋管管群热渗耦合传热模型,通过数值模拟方法研究了地下水渗流对管群内不同位置钻孔换热的影响,渗流方向角和钻孔布置形式对管群换热的影响。研究结果表明,地下水的渗流削弱了管群在垂直于渗流方向上的热影响,增强了沿渗流方向的热影响。地埋管管群无论顺排还是叉排布置,都存在一个最优渗流方向角,此时管群换热效果最好,而且渗流方向角的影响随渗流速度的增大而增强。 The heat transfer model of coupled thermal conduction and groundwater seepage of multi-pipe heat exchanger was built.The influence of groundwater seepage on the different location borehole within the multi-pipe exchanger,groundwater seepage direction angle and arrangement of borehole on the multi-pipe exchanger were analyzed.The simulation results show that groundwater seepage weakened the mutual thermal effects on perpendicular flow direction,but enhanced the mutual thermal effects along the flow direction.No matter how the arrangement of the multi-pipe heat exchanger is,there is an optimal flow direction angle.The best thermal effect would be shown,if the multi-pipe exchanger layout along the optimal flow direction angle.
作者 王沣浩 余斌 颜亮 WANG Fenghao,YU Bin,YAN Liang(Building Energy Research Center,Xi’an Jiaotong University,Xi’an 710049,Shaanxi,China)
出处 《化工学报》 EI CAS CSCD 北大核心 2010年第S2期62-67,共6页 Journal of Chemical Industry and Engineering(China)
基金 中央高校基本科研业务费专项资金项目(xjj20100078)~~
关键词 地源热泵 地下水渗流 管群 渗流方向角 ground source heat pump groundwater seepage multiple pipes flow direction angle
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