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

doi:10.1016/S1004-9541(13)60625-4

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (11): 1216-1223.DOI: 10.1016/S1004-9541(13)60625-4

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

Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, China

收稿日期:2012-05-11 修回日期:2012-10-06 出版日期:2013-11-28 发布日期:2013-11-26
通讯作者: WANG Yue
基金资助:
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

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

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:2013-11-28 Published:2013-11-26
Contact: WANG Yue
Supported by:
Supported by the Research and Development Programs of Tianjin (10JCYBJC04700, 10ZCKFSH02100).

摘要/Abstract

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

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

乞炳蔚, 王越, 王照成, 张燕平, 徐世昌, 王世昌. Theoretical Investigation on Internal Leakage and Its Effect on the Efficiency of Fluid Switcher-Energy Recovery Device for Reverse Osmosis Desalting Plant[J]. Chinese Journal of Chemical Engineering, 2013, 21(11): 1216-1223.

QI Bingwei, WANG Yue, WANG Zhaocheng, ZHANG Yanping, XU Shichang, WANG Shichang. Theoretical Investigation on Internal Leakage and Its Effect on the Efficiency of Fluid Switcher-Energy Recovery Device for Reverse Osmosis Desalting Plant[J]. Chin.J.Chem.Eng., 2013, 21(11): 1216-1223.

参考文献

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11 Wang, X.P., Wang, Y., Wang, J.P., Xu, S.C., Wang, Y.X., Wang, S.C., “Comparative study on stand-alone and parallel operating schemes of energy recovery device for SWRO system”, Desalination, 254, 170-174 (2010).

12 Bross, S., Kochanowski, W., “SWRO core hydraulic module—the right concept decides in terms of energy consumption and reliability (Ⅱ) Advanced pressure exchanger design”, Desalination, 165, 351-361 (2004).

13 Verbeek, V., “From concept design to installation and commissioning, energy recovery for SWRO in Singapore”, In: International Desalination Association World Congress, Swissotel, Singapore (2005).

14 Málek, J., Prusa, V., Rajagopal, K.R., “Generalizations of the Navier-Stokes fluid from a new perspective”, International Journal of Engineering Science, 48, 1907-1924 (2010).

15 Schneider, B., “Selection, operation and control of a work exchanger energy recovery system based on the Singapore project”, Desalination, 184, 197-210 (2005).

16 Cameron, I.B., Clemente, R.B., “SWRO with ERI's PX pressure exchanger device—A global survey”, Desalination, 221, 136-142 (2008).

17 Sun, J.X., Wang, Y., Xu, S.C., Wang, S.C., Wang, Y.X., “Performance prediction of hydraulic energy recovery (HER) device with novel mechanics for small-scale SWRO desalination system”, Desalination, 249, 667-671 (2009).

18 Pinto, J.M., Jiménez, E.P., Llansana, M.d.C., “From pilot plant to full scale plant expansion with isobaric ERDs”, In: IDA World Congress, Dubai, UAE (2009).

19 Bross, S., Kochanowski, W., Ellegaard, M., Schwarz, G., “SWRO-core-hydraulic-module; the right concept decides in terms of energy consumption and reliability”, In: International Desalination Association World Congress, Paradise Island, Bahamas (2003).

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

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

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