Evaluation criterion of flow fields in PEM fuel cells based on entropy generation analysis

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

9 Scopus Citations
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Author(s)

  • Quan Ding
  • Kai-Qi Zhu
  • Jiang-Hai Xu
  • Ben-Xi Zhang
  • Yan-Ru Yang
  • Chen Yang
  • Yu-Lin Wang
  • Zhong-Min Wan
  • Xiao-Dong Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)2328-2340
Journal / PublicationInternational Journal of Hydrogen Energy
Volume48
Issue number6
Online published2 Nov 2022
Publication statusPublished - 19 Jan 2023

Abstract

Two geometrical parameters, amplitude and wavelength, of the structure of the wavy-flow field in a proton exchange membrane fuel cell (PEMFC) were investigated on their impacts on cell performances via a three-dimensional, multiphase, and non-isothermal model. Amplitude and wavelength significantly influence oxygen transport, friction resistance, and current densities in PEMFC operations. The enhancement of current density peaks at an amplitude of 0.4 mm and a wavelength of 2 mm, increased by 10.40% compared to the non-wavy design. The wavy channels would increase the oxygen concentration gradient and the viscous friction, increasing entropy generation. The entropy generation rates increase more significantly at small wavelengths and large amplitudes. The entropy generation ratio (EGR) evaluates the performances of different wavy channels based on the accurate description of oxygen transport in PEMFC without calculating the associated pumping power consumption rates. The EGR decreases with decreasing wavelength or increasing amplitude.

Research Area(s)

  • Entropy generation analysis, Entropy generation ratio, Mass transport, Proton exchange membrane fuel cell, Wavy channels

Citation Format(s)

Evaluation criterion of flow fields in PEM fuel cells based on entropy generation analysis. / Ding, Quan; Zhu, Kai-Qi; Xu, Jiang-Hai et al.
In: International Journal of Hydrogen Energy, Vol. 48, No. 6, 19.01.2023, p. 2328-2340.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review