Optimization of energy consumption and daylight performance in residential building regarding windows design in hot and dry climate of Isfahan
Abbas Maleki, Narges Dehghan
Abstract
The design of windows can provide the proper lighting of the interior and create comfortable conditions to increase the efficiency of the building. Furthermore, in designing building façade articulation, it is important to consider the projection and indentation, therein. This study aimed to evaluate the optimum parameters of the window by measuring energy consumption and daylight quality in residential buildings. A room with a constant window-to-wall ratio of 30% and different windows angles with horizontal and vertical rotation around the orthogonal axes to the inner and outer edges of the wall in all four cardinal directions, with the hot and dry climate of Isfahan as the case sample was selected, and daylighting and energy were simulated for all situations. Considering the criteria of daylight and annual energy consumption as output variables window angle from inner-outer and outer-middle in plane mode the most optimized design options are south and west orientation with 4.81 and 1.6% energy conserve, and inner-outer angle in cross-section for east and north orientation with 3.71 and 3.49%, respectively. Low-emissivity glass performed better with a mean of 2.78% of total energy storage in optimal window angles and the southern direction window with 21% total energy consumption has been the most prominent.