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Energy and the Environment, 1999

ISSN:
1-56700-127-0 (Print)

ANALYSIS OF THE PEM FUEL CELLS WITH CONVENTIONAL AND NON-CONVENTIONAL FLOW-FIELDS

Ayoub Kazim
Department of Mechanical Engineering, University of Miami, Coral Gables, FL. 33124

Pierre Forges
University of Miami - Department of Mechanical Engineering Coral Gables, Florida 33124 - USA

H.T. Liu
Department of Mechanical Engineering, University of Miami, Coral Gables, Florida 33124, USA

Abstract

This paper presents basic mathematical modeling of conventional and non-conventional flow fields of Proton Exchange Membrane (PEM) fuel cell. The numerical resolution of the model gives the profiles of oxygen concentration, current density, polarization and overall fuel cell power density at different cell over-potentials in both flow fields. The results demonstrated the superiority of a non-conventional flow field over the conventional type, due to enhancement of the convective term in species equation, leading to a substantial improvement in the fuel cell performance.