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Title:
Experimental study of two-phase flow in a proton exchange membrane fuel cell in short-term microgravity condition
Author: Guo H; Liu X; Zhao JF(赵建福); Ye F; Ma CF
Source: APPLIED ENERGY
Issued Date: 2014-12-31
Volume: 136, Pages:509-518
Abstract: 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.
Keyword: Hydrogen ; Microgravity ; Proton exchange membrane fuel cell ; Two-phase flow ; Visual observation
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: 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.
Correspondent Email: hangguo@sohu.com
Related URLs: 查看原文
WOS ID: WOS:000345725800048
ISSN: 0306-2619
Rank: [Guo, Hang; Liu, Xuan; Ye, Fang; Ma, Chong Fang] 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; [Zhao, Jian Fu] Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China
Department: NML微重力两相流与燃烧
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/49460
Appears in Collections:国家微重力实验室_期刊论文

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Recommended Citation:
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,2014-12-31,136:509-518.
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