Design Optimization of the Skylight for Daylighting and Energy Performance Using NSGA-II

Abstract

In terms of sustainable design, lateral windows and skylights are important. Daylighting has become a vital component in office buildings because it increases occupants' productivity, well-being, and energy savings via windows and skylights. As a result, various factors have an impact on achieving Useful Daylight Illuminance (UDI) and lowering overheating and glare discomfort. First the merits of the skylight and the window are compared in this study. Second, this study constructs an intelligent optimization method NSGA-II based on Pareto front approaches that allows low energy use of the office building while maintaining excellent thermal and lighting comfort for the inhabitants. Finally, all optimum solutions look at Daylight Glare Probability (DGP) for visual comfort. Isfahan, Iran (32° N, 51° E) as a hot and dry climatic condition, is selected for the simulation. A variety of geometries with different parameters, were applied to meet the goal. Among the different cases, the optimization’s findings highlight the pyramidal design with the highest aperture on the floor. It's best for a hot, dry area and a space with a square or rectangular form. The degree of glare in all ideal geometries, on the other hand, was reasonable—furthermore, these findings aid designers in selecting the appropriate window for the building's form and environment.