Abstract / Résumé : The present work is a part of research project entitled « Modeling, Simulation, Theoretical and Experimental Thermal Studies of GhardaÑ—a Local Climate : Effect of Thermal Insulation ». This paper presents experimental and theoretical studies of two room’s thermal behaviour. These rooms are two parts of an apartment building located in semi arid area (Ghardaïa). A mathematical model describing the thermal behaviour of these rooms in question was developed and elaborated. These studies allowed also room internal temperature evolution profile to be determined. Through numerical simulation, it has been found that the applied insulation layer reduced the losses of winter and maintained an appropriate temperature.

Keywords / Mots clefs : Heat Insulation- Numerical Simulation –Polystyrene- Temperature- Air.

Journal title / Revue : )", IJACE International Journal of Advanced Computer Engineering , January- June 2009, Volume 2, issue 1