Étude du fonctionnement et optimisation de la conception d'un système pile à combustible PEM exploité en cogénération dans le bâtiment

Charles-Émile Hubert 1
1 CEP/Sophia
CEP - Centre Énergétique et Procédés
Abstract : The Polymer Electrolyte Fuel Cell (PEMFC) is an attractive technology for small cogeneration of heat and power. It could be widely spread at the time of opening European market of energy, supported by public funds owing to its environmentally friendly properties. This PhD thesis aims at studying both the operation and the design aspects of a PEMFC, fed by a hydrogen rich gas obtained by reforming of natural gas, operated as a cogeneration, in real life conditions in a building. The study and optimisation of this system are done thanks to experimental data of a prototype, the RCU-4500 (4 kW of AC power, 6 kW of heat), tested in the frame of a French research project. Firstly, a complete analysis of the operation of the unit tested allows to understand and evaluate this type of system as a small cogeneration unit; comparing it to similar ones. Measurements of inputs and outputs of the unit are done. An analysis of the control is performed. A steady-state model is developed and validated thanks to the numerous experimental data. Secondly, three cases of a redesigned system are developed with the model. This is done by optimising electrical efficiency, thermal efficiency and process water recovery, in order to reach a water self-sufficient system. Some of these virtual cases are inspired by the results of the tests carried out on the prototype to improve its efficiency, with operating conditions different from the designed ones. This analysis and optimisation of the whole process, pointing out the links between different sub-systems, is new compared to the publications found on this type of system.
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Charles-Émile Hubert. Étude du fonctionnement et optimisation de la conception d'un système pile à combustible PEM exploité en cogénération dans le bâtiment. Sciences de l'ingénieur [physics]. École Nationale Supérieure des Mines de Paris, 2005. Français. ⟨NNT : 2005ENMP1349⟩. ⟨pastel-00002331⟩

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