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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.
Source PublicationAPPLIED ENERGY
2014-12-31
Volume136Pages:509-518
ISSN0306-2619
AbstractWater 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.
KeywordHydrogen Microgravity Proton Exchange Membrane Fuel Cell Two-phase Flow Visual Observation
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000345725800048
Funding OrganizationThe 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.
DepartmentNML微重力两相流与燃烧
Classification一类
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Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49460
Collection国家微重力实验室
Corresponding AuthorGuo, 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.
Recommended Citation
GB/T 7714
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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