Discrete approach for flow field designs of parallel channel configurations in fuel cells

Junye Wang, Hualin Wang

Research output: Contribution to journalJournal Articlepeer-review

54 Citations (Scopus)

Abstract

It is the major challenge to transform a laboratory scale production of fuel cells to an industrial scale one and to meet the requirements of throughput, operating life, low cost, reliability and high efficiency in R&D of fuel cells. Designs of uniform flow distribution are central to upscale fuel cells as well as to tackle critical issues of water, thermal and current management. However, in spite of our growing appreciation of designs of uniform flow distribution, there is little or no practical solution to ensure a uniform flow distribution across channels of a cell and cells of a stack in designs of flow fields. The purpose of this paper was to develop a discrete approach to find a design that met requirements of flow distribution uniformity and pressure drop in parallel channel configurations with Z-type arrangement through adjustments of configurations and normalised structural parameters. Variation of the frictional and the momentum coefficients with flow velocities was incorporated into the flow distribution equation to improve modelling accuracy. We also developed procedure, measures and guideline for the designs of flow distribution and pressure drop to bridge knowledge gap between the generalised theory and industrial applications. The results showed that the present approach could provide the practical guideline to evaluate quantitatively performance of different layout configurations, structures, and flow conditions.

Original languageEnglish
Pages (from-to)10881-10897
Number of pages17
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number14
DOIs
Publication statusPublished - Jul. 2012

Keywords

  • Bipolar plate
  • Flow distribution
  • Fuel cell stack
  • Manifold
  • Network
  • Pressure drop

Fingerprint

Dive into the research topics of 'Discrete approach for flow field designs of parallel channel configurations in fuel cells'. Together they form a unique fingerprint.

Cite this