SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (11): 1216-1223.DOI: 10.1016/S1004-9541(13)60625-4

• FLUID DYNAMICS AND TRANSPORT PHENOMENA • Previous Articles     Next Articles

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

QI Bingwei, WANG Yue, WANG Zhaocheng, ZHANG Yanping, XU Shichang, WANG Shichang   

  1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China
  • Received:2012-05-11 Revised:2012-10-06 Online:2013-11-26 Published:2013-11-28
  • Contact: WANG Yue
  • Supported by:

    Supported by the Research and Development Programs of Tianjin (10JCYBJC04700, 10ZCKFSH02100).

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

乞炳蔚, 王越, 王照成, 张燕平, 徐世昌, 王世昌   

  1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China
  • 通讯作者: WANG Yue
  • 基金资助:

    Supported by the Research and Development Programs of Tianjin (10JCYBJC04700, 10ZCKFSH02100).

Abstract: This work is focused on the theoretical investigation of internal leakage of a newly developed pilot-scale fluid switcher-energy recovery device (FS-ERD) for reverse osmosis (RO) system. For the purpose of increasing FS-ERD 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 leakage 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 FS-ERD efficiency.

Key words: internal leakage rate, fluid switcher-energy recovery device, computational fluid dynamics, energy transfer efficiency

摘要: This work is focused on the theoretical investigation of internal leakage of a newly developed pilot-scale fluid switcher-energy recovery device (FS-ERD) for reverse osmosis (RO) system. For the purpose of increasing FS-ERD 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 leakage 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 FS-ERD efficiency.

关键词: internal leakage rate, fluid switcher-energy recovery device, computational fluid dynamics, energy transfer efficiency