Transferts couplés masse-charge-chaleur dans une cellule de pile à combustible à membrane polymère :

Abstract : Understanding and modelling of coupled mass, charges and heat transfers phenomena are fundamental to analyse the electrical behaviour of the system. The aim of the present model is to describe electrical performances of a PEFMC according to the fluidic and thermal operating conditions. The water content of the membrane and the water distribution in the single cell are estimated according to the coupled simulations of mass transport in the thickness of the single cell and in the feeding channels of the bipolar plates. A microscopic model of a Gas Diffusion Electrode is built up to describe charges transfer phenomena occurring at the electrodes. Completed by a study of heat transfer in the Membrane Electrode Assembly, conditions and preferential sites of water vapour condensation can be highlighted. A set of measurements of the effective thermal conductivity of carbon felts used in fuel cells as porous backing layers have also been performed. Although the value of this parameter is essential for the study of heat transfer, it is still under investigation because of the strong thermal anisotropy of the medium
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Julien Ramousse. Transferts couplés masse-charge-chaleur dans une cellule de pile à combustible à membrane polymère :. Autre. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL098N⟩. ⟨tel-01752524⟩

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