Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization

doi:10.1016/j.cjche.2020.09.069

中国化学工程学报 ›› 2021, Vol. 32 ›› Issue (4): 100-107.DOI: 10.1016/j.cjche.2020.09.069

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization

Wenjie Li, Yue Wang, Jie Zhou, Xiaoyu Qiao, Shichang Xu

Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

收稿日期:2020-05-15 修回日期:2020-07-23 出版日期:2021-04-28 发布日期:2021-06-19
通讯作者: Yue Wang
基金资助:
This work is supported by the National Key Research and Development Program of China (2017YFC0403800) and the State Key Laboratory of Chemical Engineering (SKL-ChE-17T02).

Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization

Wenjie Li, Yue Wang, Jie Zhou, Xiaoyu Qiao, Shichang Xu

Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

Received:2020-05-15 Revised:2020-07-23 Online:2021-04-28 Published:2021-06-19
Contact: Yue Wang
Supported by:
This work is supported by the National Key Research and Development Program of China (2017YFC0403800) and the State Key Laboratory of Chemical Engineering (SKL-ChE-17T02).

摘要/Abstract

摘要： After years of research, the energy efficiency of energy recovery device has been raised to a high level, but the salinity mixing has not been effectively improved. Mixing will lead to a rise of high-pressure seawater salinity, which will increase the operating cost. In this paper, the computational fluid dynamics (CFD) simulation of the rotary energy recovery device (RERD) is carried out. It is found that the unstable flow caused by the non-parallel between the channel and the flow direction of fluid is an important reason for mixing. After the inclined channel structure is adopted, the non-parallel problem is improved. The formation of unstable flow is effectively controlled. Under the commercial product operating conditions, the volumetric mixing of the optimized device is reduced from 3.34% to 1.29%, showing the effectiveness of the structure.

关键词: CFD, Inclined channel, RERD, Salinity mixing

Abstract: After years of research, the energy efficiency of energy recovery device has been raised to a high level, but the salinity mixing has not been effectively improved. Mixing will lead to a rise of high-pressure seawater salinity, which will increase the operating cost. In this paper, the computational fluid dynamics (CFD) simulation of the rotary energy recovery device (RERD) is carried out. It is found that the unstable flow caused by the non-parallel between the channel and the flow direction of fluid is an important reason for mixing. After the inclined channel structure is adopted, the non-parallel problem is improved. The formation of unstable flow is effectively controlled. Under the commercial product operating conditions, the volumetric mixing of the optimized device is reduced from 3.34% to 1.29%, showing the effectiveness of the structure.

Key words: CFD, Inclined channel, RERD, Salinity mixing

Wenjie Li, Yue Wang, Jie Zhou, Xiaoyu Qiao, Shichang Xu. Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization[J]. 中国化学工程学报, 2021, 32(4): 100-107.

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Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization

Adopting inclined channel to decline the salinity mixing for rotary energy recovery device: Simulation and optimization

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