By parametric analysis of direct solar gain on building walls

equivalent decomposition was carried out for the direct solar gain. Upon this

building orientation transformation rules were proposed. Two types of buildings with different lengthwidth ratio in Shanghai were taken as case studies with simulation. And comparison curves of different orientation between transformation ones and the formers were obtained. It was found that cooling loads of transformed buildings were in good agreement with those of real buildings

which implied that the essential of orientation’s influence on cooling load was areas alteration of walls and windows in different orientations. By the transformation rules of building orientation

community buildings with different orientation can be transformed into those with the same orientation to predict community cooling loads

eliminating influences of the factor of building orientation.