The energy performance improvement of a PEM fuel cell with various chaotic flowing channels

Pengcheng Dong, Yuxin Jia, Gongnan Xie, Meng Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

To improve the energy performance of a proton exchange membrane fuel cell (PEMFC), novel chaotic structures are proposed and numerically evaluated for replacing straight types in the serpentine gas diffusion flow channels. The numerical model is verified by the available experimental data. Nine cases (chaotic channels, Cases A2, B1, B2, C1, C2, D1, D2, E1, and E2) and a baseline case (straight flow channel, Case A1) are evaluated, and the detailed temperature and the flow characteristics are presented and analyzed. The influences of the main design parameters including the corner angle, bends number, and datum surface number are also analyzed and concluded. It is found that the newly proposed chaotic structures can improve not only the temperature uniformity, but also the maximum output power and the energy efficiency of the PEMFC. Compared with a traditional PEMFC, the power output of the new PEMFCs with chaotic flowing channels can be improved by 6.26% and the efficiency of PEMFC can be promoted by 8.40%.

Original languageEnglish
Pages (from-to)5460-5478
Number of pages19
JournalInternational Journal of Energy Research
Volume43
Issue number10
DOIs
Publication statusPublished - Aug 2019

Keywords

  • Chaotic geometry
  • Current-power curves
  • Energy efficiency
  • PEMFC
  • Pressure drop
  • Temperature uniformity

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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