地下水渗流对地埋管换热影响研究  

Effects of groundwater seepage on buried tube heat exchange

作　　者：岳丽燕[1] 黄贤龙[1] 孟令军[2] 孙晓林 

机构地区：[1]天津地热勘查开发设计院,天津300250 [2]中水北方勘测设计研究有限责任公司,天津300222

出　　处：《世界地质》2017年第4期1291-1296,共6页World Geology

基　　金：国家科技支撑计划课题(2013BAJ08B04)资助

摘　　要：为研究地下水渗流对地埋管换热的影响,搭建地埋管换热研究试验台,模拟不同地下水流速(0 m/a、100 m/a、200 m/a)条件下的地埋管换热器,通过试验数据分析得出:随着地下水流速的加大,将更多的热量带到下游,地埋管换热器的换热量和综合导热系数逐渐增加,对上、下游温度变化作用更明显,水流方向的热影响半径依次变大。地埋管换热器工程建设中应注重前期水文地质条件的勘察,对整个地源热泵系统工程能长期稳定运行起到关键作用。To investigate the effects of groundwater seepage on the heat exchange of buried tube,the testing platform is set up to simulate buried tube heat exchanger under different groundwater flow( 0 m/a,100 m/a and200 m/a). The test data shows that with the increasing flowing speed of groundwater,more heat is brought downstream,and the amount of heat exchange and comprehensive thermal conductivity coefficient of buried pipe heat exchanger increase gradually,resulting in obvious temperature changes in upstream and downstream,and bigger radius of heat influence along the flow direction. In the engineering construction of ground heat exchanger,it is emphasized that the investigation of hydrogeological conditions in the early stage is important,which is critical for the long-term stable operation of the whole geothermal pump system.

关 键 词：地下水渗流 地埋管换热器 换热量 导热系数 

分 类 号：TB657.5[一般工业技术—制冷工程]