Ex-situ experimental study on dynamic behaviors and detachment characteristics of liquid water in a transparent channel of PEMFC

被引：28

作者：

Yin, Yan ^{[1
]}

Li, Yu ^{[1
,2
]}

Qin, Yanzhou ^{[1
]}

Li, Mengjie ^{[1
]}

Liu, Guokun ^{[1
]}

Zhang, Junfeng ^{[1
]}

Zhao, Jian ^{[3
]}

机构：

[1] Tianjin Univ, State Key Lab Engines, Tianjin, Peoples R China

[2] Chongqing Changan New Energy Automobile Technol C, Chongqing, Peoples R China

[3] Univ Waterloo, Dept Mech & Mechatron Engn, ERC 3026,200 Univ Ave W, Waterloo, ON N2L 3G1, Canada

来源：

RENEWABLE ENERGY | 2022年 / 187卷

基金：

中国国家自然科学基金;

关键词：

Proton exchange membrane fuel cell; Direct visualization; Transparent cell; Droplet dynamics; Water management; GAS-DIFFUSION LAYERS; DROPLET DYNAMICS; FLOW CHANNEL; PRESSURE-DROP; FUEL; TRANSPORT; DEFORMATION; INSTABILITY; EMERGENCE; REMOVAL;

D O I：

10.1016/j.renene.2022.02.031

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A transparent model cell for direct ex-situ visualization of the dynamic characteristics of the growth, deformation and detachment of liquid water in the flow channel of the proton exchange membrane fuel cell (PEMFC) is designed. It fulfills the requirements of clear side imaging of water droplet behaviors in the channel. Different air velocities are implemented in the experiments to measure the droplet growth and detachment characteristics on the gas diffusion layer (GDL) surface. The results show that the droplet detachment time is shorter and detachment size is smaller with higher air velocity. Three stages of the droplet dynamic behaviors are defined, which are the growth, oscillation and removal stages of the droplet. The evolution of droplet dynamic contact angle and contact line at different stages is extracted and relevant characteristics are revealed. These results are important to quantitative characterization of droplet deformation and detachment on the GDL surface, and can also provide valuable parameters and validation for liquid water transport simulations in PEMFC. (C) 2022 Elsevier Ltd. All rights reserved.

引用

页码：1037 / 1049

页数：13

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