Active Solar Chimney (ASC) : numerical and experimental study of energy storage and evaporative cooling

Abstract : The current global warming conditions have led nations across the world to commit into energetic sustainability and greenhouse gas emission reduction. Being the third greatest energetic consumer, the building represents a major key towards energy efficiency and global temperature stabilization. Several solutions exist for the accomplishment of these goals, and the works presented throughout this dissertation concerns a particular external building solar-driven component known as solar chimney. This PhD thesis focuses on the experimental and numerical analysis of energy storage devices, in the form of Phase Changing Materials (PCMs), for the optimisation of the performance of this solar technology. The aim of this study is to characterize the impact of Rubitherm RT44 PCM panels on a solar chimney under laboratory and in-situ conditions to carry out a comparison against the classic version. Additionally, a numerical model was developed and tested in the interest of obtaining a numerical tool capable of representing the behaviour of a solar chimney. Finally a bi-objective optimization of the PCM integrated solar chimney numerical model was carried out in order to determine some of the optimal parameters of this type of technology to obtain the highest exiting air flow, all while maintaining a high enough temperature across the chimney to reach the fusion range of the PCMs.
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José Carlos Frutos Dordelly. Active Solar Chimney (ASC) : numerical and experimental study of energy storage and evaporative cooling. Thermics [physics.class-ph]. Université de Lyon, 2018. English. ⟨NNT : 2018LYSET008⟩. ⟨tel-02259912⟩

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