Research progress of gas-liquid two-phase flow in micro-channel and its application in PEMFC

被引：0
|
作者：
Liao P. [1 ,2 ]
Yang D. [1 ,2 ]
Ming P. [1 ,2 ]
Xue M. [1 ,2 ]
Li B. [1 ,2 ]
Zhang C. [1 ,2 ]
机构：
[1] School of Automotive Studies, Tongji University, Shanghai
[2] New Energy Automotive Engineering Center, Tongji University, Shanghai
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 09期
关键词：
Flow pattern; Gas-liquid flow; Mass transfer; Microchannels; Pressure drop; Proton exchange membrane fuel cell (PEMFC);
D O I：
10.16085/j.issn.1000-6613.2021-0393
中图分类号：
学科分类号：
摘要：
Micro-channel has been successfully applied in gas-liquid two-phase chemical reaction system due to its high specific surface area and strong mass transfer ability. In addition, the research achievement in the field of chemical engineering can also be utilized to improve the fuel cell electrochemical conversion efficiency. However, due to the small scale of micro-channel and the complexity of gas-liquid two-phase flow rules, further study is required to clarify the characteristics of gas-liquid two-phase flow in micro-channel, which can promote it to perform better in practical applications. In this paper, the research progress of the critical characteristics as flow patterns, pressure drop and mass transfer are illustrated. Moreover, the features of different flow patterns and its forming conditions are described, while the corresponding pressure drop and mass transfer capacity are expounded. According to this relationship, readers can get the design parameters and the necessary operated condition to achieve the expected flow patterns which can cost low pressure loss and provide great mass transfer ability. The existing prediction models of pressure drop and mass transfer coefficient and their optimization measures were reviewed. Moreover, the research progress of improving the performance of proton exchange membrane fuel cell (PEMFC) flow field design by using the relevant parameters of these key characteristics were analyzed. Base on that, the optimum proposal toward flow field type, channel size, channel shape, channel surface characteristics can be obtained. However, due to the special structure and working condition of the fine flow channel in PEMFC, it shows great different from the traditional microchannel. Therefore, it was suggested that the two-phase flow patterns, the dynamic change law of pressure drop and mass transfer should be explored aiming at the special characteristics of the fine flow channel of fuel cell, and the specific pressure drop prediction model should be developed. The further study suggested would provide a more accurate reference for the flow field design, and then enhance the performance of PEMFC, accelerate its commercialization process. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：4734 / 4748
页数：14
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