摘要
Energy recovery device （ERD） is an important part of the seawater reverse osmosis （SWRO） desalination system. There are principally two kinds of ERDs, the centrifugal type and the positive displacement （PD） type. The PD type is of extensive concern and is preferred in large-scale plants. In this article, an innovative fluid switcher was presented and a two-cylinder hydraulic energy recovery unit with a lab-scale fluid switcher was set up. Tap water was used as the working medium instead of the actual seawater and brine in SWRO desalination plants. Under steady state operating conditions, the experimental results were obtained on the variations of the pressure and flow rate to and from the energy recovery unit. The hydraulic recovery efficiency （En） of the energy recovery unit with the fluid switcher reached up to 76.83%.
精力恢复设备(ERD ) 是海水反渗透(SWRO ) 的重要部分脱盐系统。主要有二种 ERD，离心的类型和积极排水量(PD ) 类型。PD 类型具有广泛的担心并且在大规模工厂被比较喜欢。在这篇文章，创新液体 switcher 被介绍，有实验室规模液体 switcher 的一个二柱体的水力的精力恢复单位被建立。自来水在 SWRO 脱盐工厂被用作工作媒介而不是实际海水和盐水。在稳态操作条件下面，试验性的结果在压力和流量的变化上被获得到恢复联合起来并且从精力。水力的恢复效率(啊) 有液体的精力恢复单位， switcher 到达了多达 76.83% 。
基金
the Seawater Desalination Research Programs of Tianjin(043185211-4)
