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2016 12 12 C. THOUMYRE Thesis defense - Grenoble INP - CEMAM

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2016 12 12 C. THOUMYRE Thesis defense

Publié le December 6, 2016
 
Date de l'évènement : December 12, 2016
Charles THOUMYRE a le plaisir de vous inviter à sa soutenance de thèse qui aura lieu le lundi 12 décembre à 14h00 dans l'amphithéâtre Jean Besson (bâtiment PHELMA CAMPUS, 1130 rue de la Piscine - 38402 SAINT MARTIN D'HERES). Ses travaux de thèse portent sur l'Optimisation de structures Architecturées pour la captation, le stockage et la restitution d'énergie thermique et ont été financés par le labex CEMAM.
 

Optimization of architectured structures for harnessing, storage and release of thermal energy.

Jury:

M. Jean-Marc DEDULLE, Professeur associé à Grenoble INP (Examinateur)
M. Frédéric KUZNIK, Professeur à l'INSA Lyon (Rapporteur)
M. Pierre LHUISSIER, Chargé de Recherches CNRS au laboratoire SIMaP (Co-Directeur de thèse)
M. Thomas PARDOEN, Professeur ordinaire à l'Université Catholique de Louvain (Rapporteur)
M. Luc SALVO, Professeur à Grenoble INP - Phelma (Directeur de thèse)
M. Bernard YRIEIX, Ingénieur chercheur à EDF - R&D (Examinateur)

Abstract

The problematic of heat storage is important in the present context. One of the solutions is to use phase change materials (PCM). Nevertheless their thermal properties are poors and a conductive substracte must absolutely be used in order to maximise the yield of theses systems.
The purposes of this PhD are the physics phenomena implementation understanding and characterization, and the optimization of architectured structures for heat storage systems. A dual approach was adopted both experimental and numerical on simple PCM reception structures (fins) and on more complex ones (open foams). We analyzed influences of geometrical parameters (system lenght and porosity, thickness and space betweens fins, cellfoam size) from reception structure, its constituent material and its orientation. Experimental results support well with numerical simulations. This permits to pursue a more systematical study about analyzed parameters, and notably to identify in which cases natural convection has to be taken into account. Finally, from these results, we developped a tool which permits to optimize architectured structures for a defined bill of specifications.

 
 
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