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AbstractAbstract
[en] Compare to fossil fuel energy resources, solar energy presents the inherent characteristic given by the very nature of the resource (intermittent availability). This observation highlights the need for thermal energy storage system. This doctoral thesis studies thermal energy storage for concentrating solar power plant, as well as its two essential components: the heat transfer fluid and the thermal energy storage materials. The analysis of the thermocline storage system with filler materials is achieved through experimental and numerical approaches. An innovative alternative for the heat transfer fluid consists to use vegetable oils, which offers comparable thermal properties and operating behavior to conventional thermal fluid. Regarding thermal energy storage materials, many natural and recycled materials can be used. A storage material with controlled geometry is developed from steel industry co-product. The originality of this combination for thermal energy storage combines performance, materials availability at industrial scale while reducing environmental and financial impact. (author)
[fr]
Par rapport aux ressources energetiques fossiles combustibles, l'energie solaire presente des caracteristiques inherentes a la nature meme de la ressource (intermittence de la disponibilite). Ce constat met en evidence la necessite de systeme de stockage d'energie. Ce travail de these consiste a etudier un stockage thermique pour une centrale solaire a concentration, ainsi que ses deux composants essentiels: le fluide de transfert et les materiaux de garnissage solides. La comprehension du systeme de stockage thermocline sur lit de roche est realisee grace a une approche experimentale et numerique. Une alternative innovante sur le choix du fluide de transfert consiste a utiliser des huiles vegetales, offrant des proprietes thermiques et un comportement operatoire corrects par rapport a un fluide classique. Concernant le garnissage du stockage thermique, de nombreux materiaux naturels ou recycles peuvent etre utilises. Un materiau de stockage a geometrie controlee est developpe a partir d'un coproduit issu de la siderurgie. L'originalite de cette association pour le stockage thermique permet d'allier performance, disponibilite des materiaux en quantite industrielle tout en reduisant l'impact environnemental et financier. (auteur)Original Title
Stockage thermique pour centrale solaire thermodynamique a concentration mettant en oeuvre des materiaux naturels ou recycles
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Source
3 Dec 2015; 269 p; 163 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; These de Doctorat, Specialite: Energetique et Genie des Procedes
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Miscellaneous
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Thesis/Dissertation
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