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Comportement local et performances électriques d'une pile à combustible à membrane : vers un outil de diagnostic

Abstract : The present work contributes to the understanding of water management and thermal management of a PEM fuel cell influences on the electrical performances. A bidimensional model representing mass and heat transfer in the cell thickness and along distribution channels is done. A specific part of the study concerns a microscopic representation of reactive agglomerates. This part presents the impact of the liquid water presence on local and global current densities. In te vein of integrating this model in a total fuel cell control system, simplifications have been done and coupled mass, heat and charge transfers are solved analytically. For any operating condition, the model gives a complete view of the hydric, thermal and electric inner situation of the cell. This diagnosis of the inner state of the cell leads to find the operating conditions giving to the optimal electric performances. Water, current and temperature distributions are presenting for different gas feeding strategies and different thermal management configurations. A specific part is dedicated to illustrate how this local diagnosis of the cell state can be used to estimate its global electric performances
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Submitted on : Thursday, March 29, 2018 - 11:47:52 AM
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  • HAL Id : tel-01748745, version 1



Sylvain Chupin. Comportement local et performances électriques d'une pile à combustible à membrane : vers un outil de diagnostic. Autre. Institut National Polytechnique de Lorraine, 2009. Français. ⟨NNT : 2009INPL098N⟩. ⟨tel-01748745⟩



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