地下水源热泵运行时颗粒粒径对颗粒起动影响的理论分析  

Theoretical Analysis on Initiation of Particle Motion Affected by Particle Diameters under GWSHP Operating

作　　者：王松庆[1] 张旭[1] 

机构地区：[1]同济大学,上海200092

出　　处：《流体机械》2009年第9期63-66,共4页Fluid Machinery

基　　金：国家"十一五"科技支撑项目(2006BAJ01B05)

摘　　要：地下水源热泵运行时地下水渗流引起颗粒起动是造成井壁坍塌和井壁周围颗粒重组等实际问题的重要原因之一。本文针对上述问题通过理论计算分析了颗粒粒径对颗粒起动的影响,结果表明与大粒径颗粒相比,粒径较小的颗粒不易于起动,有利于延长地下水源热泵的使用寿命。Initiation of particle motion which is caused by groundwater seepage is one of the main reasons for subsidence of pumping well wall and particles regrouping under GWSHP operating. In the paper, the initiation of particle motion affected by particle diameters is analyzed through theoretical calculation combined with above mentioned problems. The present study indicates that the small-size particle can not he easily initiated compared with large-size, it benefits to extent life of GWSHP.

关 键 词：地下水源热泵 颗粒粒径 颗粒起动 

分 类 号：TQ051.5[化学工程]