Contribution à la conception et à l'optimisation thermodynamique d'une microcentrale solaire thermo-électrique

Abstract : As a new millenium begins, 1.4 Billion people worldwide earn less than 2 dollars daily and have no access to the power grid. The need of electric power of these people represent small energy amounts but is very important regarding to the usage : acces to healthcare and education, communication, local economic development. In reponse to the situation, since 2009, Schneider Electric Industries takes up the challenge to design and realize micro solar power plants, competitive with other solutions, to supply these people with reliable and environment-friendly electricity. Dealing with this project, this work has been realized under contract, so it follows the development sequence of the industrial project. The first part is a State of the Art of the actual solar thermodynamical technologies. This task is extended to a qualitative evaluation of various technologies, as a contribution to select adapted technologies: concentrating solar thermal receivers, sensible heat thermal storage and Stirling engine. The secon step is a preliminary thermodynamics analysis of the whole system, that allowed to evaluate key features: the size of the solar receivers area, the thermal storage volume, and overall energy performance. This task is streched by a sensitivity analysis of the sizing and performances, according to various energy losses parameters, that shows the technical hard spots of the design. Finally, an exergy-based dynamical analysis of stationary operating solar receivers and Stirling engines leads to a propostion of basis methods and criteria for the optimal control of power, in order to maximize the energy performances of the system and to enhance its competitiveness
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Antoine Mathieu. Contribution à la conception et à l'optimisation thermodynamique d'une microcentrale solaire thermo-électrique. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0027⟩. ⟨tel-01749207⟩

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