THE THERMAL COMFORT INVESTIGATION OF TWO TRADITIONAL HABITAT MODELS IN THE SUB-SAHELIAN AREA,
Auteur(s): Issaka Ouédraogo1, Windé. Nongué Daniel Koumbem2, Noufou Bagaya2 and Alioune Ouédraogo3
Résumé

We show through experimental and numerical investigation of the thermal confort in the two model traditionnal habitat in subsahelian area. The first is a rectangular model from Dogon people and the second is vaul model from the Peulhs people. We found the following result in the Dogon habitat : T=24.9°C-34.8°C,RH =10-20.7%, DP=-0.5-10.7. The air flow circulates in the habitat by natural convection is Qv =0.0567-0.0652 m3.s-1. The flow of ventilated air ,associated with the temperature of the air of the habitat indicates a comfortable environment in terms of the concept of thermal comfort.In the vault model from Peulhs people, the result is: RH=5.8-25.5.5%, the internal air temperature is T=22.6°C-33.1°C; DP=-5.6-11.5. This construction is adapted to the nomadic way of life and doesn’t provide protection against daytime temperature peaks. Also, the nights are relatively cool due radiation at wavelengths between 8 and 13 µm. This model is very adapted during the night.The numerical results indicate; air temperature is T=25.3°C-34.9°C in the Dogon habitat and T=23.5°C-33.8°C.Finally, the local materials and the exploitation of endogenous knowledge can be solutions to the problems of high energy consumption in habitat.

Mots-clés

Thermal Comfort Traditional Habitat

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