A. Kaddour ¹, S. M. A. Bekkouche ¹

Affiliations
1 Centre Developpement des Energies Renouvelables (CDER), Unite de Recherche Appliquee en Energies Renouvelables (URAER), Ghardaia – 47133, DZ

Abstract

In this current contribution air temperature computing of different areas composing a given building is carried out. For this reason an ensemble of determinist input factors are used. These factors comprise among others climate, local environment, building characteristics, construction means, occupant's behavior and thermal loads. It has been found that the optimal solution depends strongly upon the ability to optimize building outer envelope, internal load and occupant's behavior. It depends slightly, upon particularity of building design including opening and level of air infiltration. In this article, the internal temperature in a house studied is dependent on the external climatic conditions. The natural ventilation can be optimized by changing the architecture of the building, as well as the conduct of the occupants.

Keywords

Energy Saving, Occupant’s Behaviour, Temperature, Thermal Load.

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M. Hamdani ¹, S. M. A. Bekkouche ¹, T. Benouaz ², M. K. Cherier ¹, R. Belarbi ³

Affiliations
1 Unité de Recherche Appliquée en Energies Renouvelables, URAER, Centre de Développement des Energies Renouvelables, CDER, 47133, Ghardaïa, DZ
2 University of Tlemcen, DZ
3 University of La Rochelle, FR

Abstract

Objectives: This article presents a theoretical and experimental study aimed at demonstrating the valuable role of the indoor thermal insulation of a building located in arid climate region. Methods/Statistical Analysis: Mathematical model is proposed to evaluate the effect of thermal insulation on the energy performance of the building envelope. The different temperature values of the walls and indoor air provided by the simulations are compared to those measured. It was revealed that the proposed mathematical model able to apply the real temperatures, and it is possible to carry out a study that allows showing the role of the thermal insulation. Findings: According to this study, the exposed walls provided with insulation give better results compared to the case where one or two walls isolated. The thickness of the polystyrene significantly affects the efficiency of the insulation and allows a remarkable damping of the fluctuations of the indoor air temperatures of the building. The results also show that the wall layer of polystyrene plays the role of a thermal barrier. The results indicate that in arid climate zone, heat gains through the walls certainly the main cause of overheating of buildings. One of the most important solutions of a passive house is to give high priority with regard to the performance of the thermal envelope, such as high insulation of walls. Application/Improvements: Through this model, we have been able to review some phenomena already mentioned, such as thermal storage, and to prove the effect of interior insulation on the temperature profile of walls and indoor air.

Keywords

Indoor Air Temperatures, Interior Insulation, Mathematical Models, Polystyrene, Walls Exposed

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