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Valorisation de l'inertie thermique pour la performance énergétique des bâtiments

Abstract : Thermal inertia is a key asset to store energy received by the building and release it when needed : in winter, when used with a good insulation, it can store solar heat gains available during the day (collected via different systems) and restitute them during the night thus reducing energy consumption. In summer, building thermal mass coupled with an efficient night ventilation helps remove the energy stored during the day, which limits overheating periods inside the building during the next day. Optimal use of thermal inertia results from an appropriate selection of building materials during the preliminary design phase and the development of strategies to exploit their storage capacity. Actual thermal simulation tools allow for higher accuracy in heat transfer modeling through the building envelope. However, their level of precision is not necessarily adapted to the needs of designers during the design phase when making the first choices. Nevertheless, they remain indispensable not only for the validation of these choices but also to develop methods to improve the management of the energy prior to the completion of a project. This work aimed to develop a design methodology based on two complementary approaches : the first method uses the accurate building response evaluated using a dynamic simulation model developed in SimSPARK simulation platform that we had the opportunity to compare with experimental measurements on the INCAS platform. The second one consists on using the results of a simplified tool (CoSPARK) to determine, with only few design key elements, the appropriate characteristics of the envelope that optimize the energy performance of the building. The last part of this work exposes some strategies that help take full advantage of the thermal mass inertia ; on one hand, for summer comfort, with the use of an adaptive night ventilation control, and, on the other hand, for winter periods, by reducing heating consumption using a radiant floor heating coupled with a solar system.
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Submitted on : Thursday, May 24, 2012 - 4:32:19 PM
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Layal Chahwane. Valorisation de l'inertie thermique pour la performance énergétique des bâtiments. Architecture, aménagement de l'espace. Université de Grenoble, 2011. Français. ⟨NNT : 2011GRENA017⟩. ⟨tel-00701170⟩

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