Author(s)

Windé Nongué Daniel Koumbem^1*, Issaka Ouédraogo², Wend Dolean Arsène Ilboudo², Pèlèga Florent Kieno¹

¹Universite Joseph Ki-Zerbo, Ouagadougou, Burkina Faso.
²Institut de Recherche en Sciences Appliquées et Technologies, Ouagadougou, Burkina Faso.

The thermal performance of three roofing models: tile, corrugated and earth terrace is numerically analyzed. The mathematical equations which govern the three roofing models are established by the electrical method of analogies. These equations are discretized by an implicit finite difference method and solved by the Gauss-Seidel algorithm. We analyze the influences of geometric parameters (Xlo, Xlarg, α and Ep) on the evolution of the temperatures of the different environments of our three roof models. In particular, we have shown that the effectiveness of a roof in reducing the temperature inside a room is linked to its physical properties. The results obtained that for the same geometric parameters, the earth roof terrace and the earth tile roof compared to the corrugated metal roof improve thermal comfort by lowering the interior temperature of 5ºC and 4.6ºC.

Thermal Performance, Roof, Room Temperature

Koumbem, W. , Ouédraogo, I. , Ilboudo, W. and Kieno, P. (2021) Numerical Study of the Thermal Performance of Three Roof Models in Hot and Dry Climates. Modeling and Numerical Simulation of Material Science, 11, 35-46. doi: 10.4236/mnsms.2021.112003.