Optimisation thermique d'un mur composite par l’intégration d'un PCM pour l'amélioration du confort thermique des bâtiments.

Abstract

This thesis focuses on the thermal optimization of a composite wall incorporating a phase change material (PCM) in order to improve thermal comfort in buildings and reduce energy consumption. PCMs can store and release heat in the form of latent heat during solid/liquid phase transition, which helps limit indoor temperature fluctuations. The study is based on a numerical simulation carried out using ANSYS Fluent and the enthalpy-porosity method to model heat transfer and phase change phenomena. Several parameters were analyzed, including the type of PCM, its thickness, and its combination with passive insulation techniques. The results show that integrating PCMs improves the thermal inertia of walls, reduces heat flux, and enhances indoor thermal comfort while decreasing heating and cooling energy demands.