期刊
PARTICUOLOGY
卷 8, 期 6, 页码 582-587出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.partic.2010.07.011
关键词
Gas distributor; Gas-liquid two-phase flow; Fuel cell flow field; Pressure drop hysteresis; Flow mal-distribution
资金
- Natural Sciences and Engineering Research Council (NSERC) of Canada
All existing proton exchange membrane (PEM) fuel cell gas flow fields have been designed on the basis of single-phase gas flow distribution. The presence of liquid water in the flow causes non-uniform gas distribution, leading to poor cell performance. This paper demonstrates that a gas flow restrictor/distributor, as is commonly used in two-phase flow to stabilize multiphase transport lines and multiphase reactors, can improve the gas flow distribution by significantly reducing gas mal-distribution caused by either non-uniform water formation in parallel flow channels or flow instability associated with negative-slope pressure drop characteristic of two-phase horizontal flow systems. (C) 2010 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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