ABSTRACT
Daylight illumination of building interiors is an ancient art now benefiting from relatively recent engineering advances. The benefits are numerous, including energy savings, improved occupant work performance, and enhanced visual and thermal comfort. The design must avoid overheating and the discomfort and reduced productivity resulting from glare. Good daylighting design can displace electric lighting and reduce air pollution, global warming, and dependence on dwindling supplies of fossil-fuel energy. The best daylighting performance results from extensive active (or well-designed passive) management of fenestration apertures.
