Thermic Presentation of Uncovered Composed Coverings in Jordan's Hot Dry Desert Province (Southern Badya)

Abstract

Thermic performance for any building in hot dry province depend on the external climatic factor, the ability of the construction materials used in gained heat through day time and loss this heat through night time through the nocturnal radiation. Covering is considered the major part of the building envelop which exposed to high thermic load due to the high solar intensity and high outside air temperature through summer which reach to 6 months. In Jordan the thermic effect of covering is increased as one go towards from north to south. This study evaluate the thermic performance of different test rooms with different coverings construction; non-insulated concrete, insulated concrete, double, plant, and active concrete coverings, built under the effect of external climatic condition of very hot and dry province in Jordan (Southern Badya province). The external climatic conditions and the temperature distribution inside the covering construction and the interior air temperature were measured. The results of this study recognized that the thermic transmittance (UValue) has a major role in choosing the built materials. Also the thermic insulation considered the suitable manner for damping the thermic stresses among day time and makes the interior environment of the building near the console zone during most months of the a whole year. Natural night and forced ventilation are more important in improving the internal conditions. The construction covering systems show that the interior air temperature thermic damping reach to 96%, 90%, 89%, and 76% for insulated concrete, double, planted and non-insulated concrete coverings. The results also investigate the importance of using the ground as a cooling source through the active concrete system.

Keywords: Thermic insulation, covering, double covering, green covering, shaded covering, building envelope, and thermic console.