Heat and mass transfer influence on potential variation in a PEMFC membrane |
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Authors: | Bachir Dadda Saïd Abboudi Rida Zarrit Abderrahmane Ghezal |
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Affiliation: | 1. Unité de Recherche Appliquée en Energies Renouvelables, URAER, Centre de Développement des Energies Renouvelables, CDER, 47133 Ghardaïa, Algeria;2. Institut IRTES-M3M, EA 7274, UTBM, Site de Sévenans, 90010 Belfort Cedex, France;3. Département EMF, Faculté de Physique, USTHB, Algiers, Algeria |
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Abstract: | Water transport in the membrane of a PEM fuel cell is provided essentially by a convective force, resulting from a pressure gradient, an osmotic force, due to a concentration gradient and an electric force caused by the protons migration from the anode to the cathode. Through these three types of force the two-dimensional behavior of electric potential has been studied in this paper. The adopted model in this work is based on the assumption of single phase and multi-species flow, supposed two-dimensional and transient in a porous medium. The species conservation equation is coupled with the energy equation through the diffusion coefficient of water and the heat convective flux. The set of governing equations in the form of convection–diffusion problem has been solved numerically using the finite volume method. The obtained results show the transient two-dimensional effect of heat and mass transfer on the voltage variation within the membrane. |
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Keywords: | Proton exchange membrane fuel cell Potential variation Finite volume Two-dimensional model |
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