Performance and flow characteristics of large-sized PEM fuel cell having branch channel

Seong Ho Han, Nam Huen Choi, Young Don Choi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to further commercialize fuel cell systems, The price of The systems needs to be reduced. In particular, problems concerning The high price of The stack, part of The fuel cell system, need to be resolved. The reduction of The number of stack layers can achieve shrinkage of The stack components, including The bipolar plate, MEA, and gasket, with a significant reduction in The price of The stack. Accordingly, to determine a way to reduce The number of stack layers, The bipolar plate needs to be large; this study thus presents a new channel pattern to restrain The increase of The differential pressure of The cathode that would be caused by a large-sized bipolar plate. Computational analysis shows that, in The case where a branching factor (f) of The branch channel is changed from 1 to 0.5 in its exit part, The performance of The channel is similar, but The pressure drop is reduced by 78.33% compared to a serpentine channel. Test results suggest that while The serpentine channel produces The electric power of 139.8 W due to The pressure drop, a blower consumes electric power of 9.12 W and, in case of The branch channel with The f value of 0.5 in its exit part, The blower consumes The electric power of 4.38 W, which is a 3.55% greater performance compared to The serpentine channel.

Original languageEnglish
Pages (from-to)4819-4829
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number14
DOIs
Publication statusPublished - 2015 Apr 20

Keywords

  • Current density
  • Dimensionless number
  • Flooding
  • Mass flow rate
  • PEMFC
  • Stoichiometry

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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