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Analyse Thermodynamique en Dimensions Finies du Système Pile à Combustible

Abstract : Producing direct electrical energy, the fuel cell is often considered as a battery. However, it also produce a specific type of work in consuming the chemical energy carried by a fuel and a combustive. Hence, it also be viewed as a sort of internal combustion heat engine. Starting from this idea, we represent the fuel cell as an equivalent heat engine, the ideal fuel cell i.e. reversible in a thermodynamical way, being represent by a Carnot heat engine. Then, introducing this representation in the Finite Dimensions Thermodynamics framework, we define a endoreversible fuel cell that produce entropy only in exchanging mass and energy with the surrounding. Considering all these results with an exergy point of view allow us to analyze the whole Fuel Cell System i.e. the fuel cell and its ancillaries (heat exhangers, humidifying system, etc.), in a more relevant way. The resulting Finite Dimensions Exergy Analysis is successively applied to the fuel cell and its ancillaries, and finally to some interesting examples of fuel cell systems e.g. composed by high or low temperature fuel cell and by a combined cycle system with a heat engine. Beyond the well known relevancy of exergy approach to analyze very different types of systems, we want here to show that it would be very interesting and useful to apply it out of its traditional topics, for example in electrotechnics.
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Contributor : Alexandre Vaudrey <>
Submitted on : Thursday, March 31, 2011 - 2:34:38 PM
Last modification on : Thursday, November 12, 2020 - 9:42:11 AM
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  • HAL Id : tel-00581658, version 1

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Alexandre Vaudrey. Analyse Thermodynamique en Dimensions Finies du Système Pile à Combustible. Energie électrique. Université de Franche-Comté, 2009. Français. ⟨tel-00581658⟩

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