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Transferts de chaleur et de masse dans les parois des bâtiments à ossature bois

Abstract : This thesis focuses on modeling and characterization of heat and mass transfer in a wooden building envelope. A code which simulates unsteady heat and mass in an air layer in two-dimensional geometry, which is part of the multi-layer wall, was developed and validated. Numerical validations that include all transfer modes were achieved for unsteady and steady states regimes (conduction, convection, surface-to-surface radiation, mass transfer and surface condensation). Then, the code developed for the air layer at the LEMTA was coupled to the code Transpore used at the LERFOB. The latter one deals with the transfer in hygroscopic solid materials. For the experimental validation of the fully coupled code, an experimental cell was constructed and instrumented to study the hygrothermal behavior of the studied walls. This cell which is thermally and hygroscopicly controlled was set up at the CRITT BOIS. Comparisons between the experimental and numerical results are presented and discussed. Besides, several experiments of thermal characterization of various materials (insulators containing wood fibers, solid wood ...) were also conducted. The influence of temperature and moisture on thermal conductivity and specific heat was largely investigated
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  • HAL Id : tel-01746226, version 1



Issiaka Traoré. Transferts de chaleur et de masse dans les parois des bâtiments à ossature bois. Autre [cond-mat.other]. Université Henri Poincaré - Nancy 1, 2011. Français. ⟨NNT : 2011NAN10085⟩. ⟨tel-01746226⟩



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