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Experimental study of two-phase flow in a proton exchange membrane fuel cell in short-term microgravity condition
Guo H; Liu X; Zhao JF(赵建福); Ye F; Ma CF; Guo, H (reprint author), Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Heat Transfer & Energy Convers, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing 100124, Peoples R China.
2014-12-31
发表期刊APPLIED ENERGY
卷号136页码:509-518
ISSN0306-2619
摘要Water management is important for improving the performance and stability of proton exchange membrane fuel cells (PEMFCs) for space applications. An in situ visual observation was conducted on the gas liquid two-phase flow in the cathode channels of a PEMFC in short-term microgravity condition. The microgravity environment was supplied by a drop tower. A single serpentine flow channel with a depth of 2 mm and a width of 2 mm was applied as the cathode flow field. A membrane electrode assembly comprising of a Nafion 112 membrane sandwiched between gas diffusion layers was used. The anode and cathode were loaded with 1 mg cm(-2) platinum. The PEMFC shows a distinct operating behavior in microgravity because of the effect of gravity on the two-phase flow. At a high water production regime, cell performance is enhanced by 4.6% and the accumulated liquid water in the flow channel tends can be removed in microgravity conditions to alleviate flooding. At a low water production regime, cell performance deteriorates by 6.6% and liquid aggregation occurs in the flow channel because of the coalescence of dispersed water droplets in microgravity conditions, thus squeezing the flow channel. The operating behavior of PEMFC in microgravity conditions is different from that in normal gravity conditions. Further studies are needed on PEMFC operating characteristics and liquid management for space applications. (C) 2014 Elsevier Ltd. All rights reserved.
关键词Hydrogen Microgravity Proton Exchange Membrane Fuel Cell Two-phase Flow Visual Observation
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收录类别SCI ; EI
语种英语
WOS记录号WOS:000345725800048
项目资助者The authors express their gratitude to the National Natural Science Foundation of China (Grant Nos. 51476003 and 11102005), Program For New Century Excellent Talents in University (Grant No. NCET-10-0006), and Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20121103110009) for the financial support. The authors would also like to thank Mr. Jia Xing LIU for the typesetting.
课题组名称NML微重力两相流与燃烧
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/49460
专题国家微重力实验室
通讯作者Guo, H (reprint author), Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Heat Transfer & Energy Convers, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing 100124, Peoples R China.
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Guo H,Liu X,Zhao JF,et al. Experimental study of two-phase flow in a proton exchange membrane fuel cell in short-term microgravity condition[J]. APPLIED ENERGY,2014,136:509-518.
APA Guo H,Liu X,赵建福,Ye F,Ma CF,&Guo, H .(2014).Experimental study of two-phase flow in a proton exchange membrane fuel cell in short-term microgravity condition.APPLIED ENERGY,136,509-518.
MLA Guo H,et al."Experimental study of two-phase flow in a proton exchange membrane fuel cell in short-term microgravity condition".APPLIED ENERGY 136(2014):509-518.
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