Theoretical Investigation on Internal Leakage and Its Effect on the Efficiency of Fluid Switcher-Energy Recovery Device for Reverse Osmosis Desalting Plant  

作　　者：乞炳蔚 王越 王照成 张燕平 徐世昌 王世昌 

机构地区：[1]Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratoryof Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China

出　　处：《Chinese Journal of Chemical Engineering》2013年第11期1216-1223,共8页中国化学工程学报（英文版）

基　　金：Supported by the Research and Development Programs of Tianjin(10JCYBJC04700,10ZCKFSH02100)

摘　　要：This work is focused on the theoretical investigation of internal leakage of a newly developed pi lotscale fluid switcherenergy recovery device （FSERD） for reverse osmosis （RO） system. For the purpose of in creasing FSERD efficiency and reducing the operating cost of RO, it is required to control the internal leakage in a low level. In this work, the internal leakage rates at different leakage gaps and retentate brine pressures are investigated by computational fluid dynamics （CFD） method and validating experiments. It is found that the internal leak age has a linear relationship with the retentate brine pressure and a polynomial relationship with the scale of leakage gap. The results of the present work imply that low internal leakage and high retentate brine pressure bring benefits to achieve high FSRD efficiency.这个工作为反向的渗透(RO ) 集中于一台最新发达的飞行员规模液体开关精力恢复设备(FS-ERD ) 的内部漏的理论调查系统。为增加 FS-ERD 效率并且减少 RO 的操作费用的目的，在底层控制内部漏被要求。在这个工作，在不同的漏差距和 retentate 盐水压力的内部漏率被计算液体动力学(CFD ) 调查方法和验证实验。内部漏与有漏差距的规模的 retentate 盐水压力和一种多项式关系有一种线性关系，这被发现。现在的工作的结果暗示那低内部漏和高 retentate 盐水压力带好处完成高 FS-ERD 效率。

关 键 词：internal leakage rate fluid switcher-energy recovery device computational fluid dynamics energytransfer efficiency 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程] TS108.3[轻工技术与工程—纺织工程]