Effect of Insulation Configuration of Residential Building Wall on Annual Heating-Cooling Loads in Iran

The use of insulating material in envelope of a residential building reduces the total amount of annual cooling-heating loads. This is affected by two factors: the insulation thickness, and the configuration of installation of the insulation. In the present study effect of configuration and distribution of a 5 centimeters styro-foam insulation in a 20 centimeters thickness concrete walls and roofs is investigated. The climatic condition are chosen as of Tehran city (as moderate climate), and Tabriz city (as cool climate), and Ahwaaz city (as hot climate). The results show that use of insulation material in buildings of these cities reduces the annual loads 64-72% approximately. The reduction of annual loads depends on the insulation configuration.