干旱区生态环境知识资源中心

This work proves that an optimized building envelope takes into account thermal properties and building materials. The major concept of the thermal rehabilitation is based on the wall composition especially on the calculation of the walls thermal resistance. In the literature, the values of thermal resistance of air spaces are very different. In this regard, other factors must be taken into consideration in these measurements such as the mobility of air in all wall elements which contributes an insulating effect. Indeed, the numerical simulation save a great deal of time and effort in computational terms and showed that the horizontal position of the hollow brick gives the best results. In this sens, a building envelope, as a passive source of energy, is a critical factor. In conclusion, to achieve a better thermal comfort in arid and semi arid regions, a new configuration of the wall has been proposed, allows to enhance the thermal insulation of the envelop while eliminating thermal bridges.