Transferts de Chaleur Couplés dans une Cavité Partitionnée en Régime Stationnaire ou instationnaire (Unsteady coupled heat transfer in partially divided cavities)
Résumé
Bricks with large numbers of air cells have been designed as a method for improving the thermal insulation of the buildings. Increases in the thermal efficiency of these kinds of bricks require a better understanding of the heat transferred by thermal diffusion, natural convection and radiation. The results discussed herein clearly show the large influences of radiation heat transfer for the case of multipartitioned, differentially heated cavities, both for steady and unsteady regimes. The numerical solutions are also compared with analytical solutions based on networks of thermal resistances and with experimental measurements.