Performance of Building Energy Efficiency by Orientation with Regression: a Case of Semi Desert in Iran

Abstract

In this research multiple-regression analysis with stepwise selection method was employed for investigating the effect<br />of vertical building envelopes solar radiation (Evr) on cooling energy consumption (E cooling) in residential sector.<br />The high capacity of solar energy in semi-arid climate (Shiraz) can provide a part of buildings required energy. Depends<br />on house orientations in two directions of SE and SW and by using statistical data, E cooling in urban residences was<br />analyzed. The autocorrelation in the residuals, checked by Durbin- Watson test, was not existed. By investigating<br />the relations between average Evr and E Cooling in each group, it can be proved that climatic orientated houses can<br />achieve lower E Cooling, owing to SE desirable orientation. The percentage of Evr in SW houses is 28.89 % and in SE<br />it is 15.72 %, so choosing the building orientation is important to reduce energy consumption. Finally, the concluding<br />remarks were indicated.