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Theses

Gestion énergétique d'un ensemble réservoir d'hydrogène à hydrure et une pile à combustible PEM

Abstract : This thesis deals with the phenomena inherent in the coupling of a hydrogen storage system based on metal hydrides and a fuel cell. The aim is to develop an optimal flow management law (electrical, fluidic, thermal).A detailed study was carried out on the various means of hydrogen production and the different methods of its storage. A large place is given to the characterization of the hydrides within the reservoir. This work allowed the development of a new characterization method for hydride tanks. The latter was experimentally carried out with charge and discharge processes carried out on three reservoirs containing different hydrides. Given the manufacturer's confidentiality, several data were not accessible experimentally. Thus, a numerical model of the hydride tank was carried out in the multiphysics Comsol environment. In order to model the thermal coupling between the fuel cell and the hydride tank, an OD model in the Matlab Simulink environment of a fuel cell, hydride tank and heat exchanger system was realized. These developments resulted in the proposal and study of two topologies for the management of heat exchanges between the fuel cell and the type AB hydride tank: series topology and parallel topology. In the series topology, the same heat transfer fluid circulates in the reservoir and in the fuel cell, which means that the two components have the same operating temperatures. This can cause difficulties in the operation of the POC which generally requires higher operating temperatures than those of the tank. The parallel topology provides the solution to this problem by offering the possibility of two distinct operating temperatures for the PàC and the tank.
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Djafar Chabane. Gestion énergétique d'un ensemble réservoir d'hydrogène à hydrure et une pile à combustible PEM. Autre. Université Bourgogne Franche-Comté, 2017. Français. ⟨NNT : 2017UBFCA010⟩. ⟨tel-01870157⟩

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