地下水源热泵物理阻塞系统介质长度改变时沉积特性参数研究

STUDY ON PARAMETERS OF DEPOSITION CHARACTERISTICS OF MEDIUM LENGTH OF WATER SOURCE HEAT PUMP SYSTEM

介绍针对地下水源热泵系统阻塞机理研究开发的砂层阻塞模拟试验系统。通过对玻璃珠颗粒和砾石颗粒的对比性试验得出:砾石颗粒间的不均匀性为颗粒的沉积提供了"温床",孔隙孔道的不连续和不均匀性有利于悬浮颗粒的沉积,在不同长度的试验箱体中,流体速度与悬浮颗粒沉积率呈现出不同的变化关系。悬浮颗粒恢复率与流体速度以及试验箱体长度间的变化关系也呈现出增减不同的变化。

This paper introduces the underground water source heat pump system research and development mechanism of sand blocking simulation test system. Through the contrast experiments of particles of glass beads and gravel that uneven gravel particles provides a hotbed for particle deposition,which is helpful to the deposition of suspended particles pore discontinuity and inhomogeneity in the test box,different length,fluid velocity showing different relations with the suspended particle deposition rate. The relationship between the recovery rate of the suspended particles and the velocity of the fluid and the length of the test chamber also showed different changes.