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Etude du vieillissement de récepteurs solaires : estimation de propriétés thermophysiques par méthode photothermique associée aux outils issus de l'intelligence artificielle

Abstract : The increasing energy consumption and the awareness of climate change induced by the increasing greenhouse gas emissions result in a progressive change of the energy model. Technologies based on renewable resources have been developing for several decades, such as concentrated solar power plants (CSP). So the issue of their sustainability is studied in many research programs. This thesis contributes to the development of a methodology for the accelerated ageing of the materials used in CSP receivers, which is the component submitted to concentrated solar radiation. For this purpose, several experimental protocols are carried out. Their efficiency is examined in light of the evolution of the radiative properties of the materials (absorptivity, emissivity). On another hand, the thermophysical properties such as the thermal conductivity and diffusivity are studied on a wider range of materials. Considering the limits of the current characterization methods, a new method for estimating these properties is developed. This is based on artificial neural networks and relies on photothermal experimental data.
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Submitted on : Friday, January 8, 2021 - 4:15:08 PM
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  • HAL Id : tel-03104101, version 1

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Reine Reoyo-Prats. Etude du vieillissement de récepteurs solaires : estimation de propriétés thermophysiques par méthode photothermique associée aux outils issus de l'intelligence artificielle. Thermique [physics.class-ph]. Université de Perpignan, 2020. Français. ⟨NNT : 2020PERP0017⟩. ⟨tel-03104101⟩

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