N. Fachrizal dan M. Pramudji
UPT-LSDE BPPT PUSPIPTEK Serpong, Tangerang
Abstract
The use of small size optical windows and/or low transmission glass, the existence of another building, trees, or shaded construction outside windows, and also window direction facing to the sun daily motion, are the factors that limit the amount of daylight through the windows into the room. Poor maintenance and miss arrangement of the room make less daylight coming to work plane. This conditions make the room totally lighted by electric lamps. Another case, the room’s users have unconsciousness to use daylight even the room supports for that need. Daylight measurements in a commercial building show there is no room has daylight factor (DF) exceeds the standard value. DF values, measured at some certain points on work plane in the room, are resulted by dividing measured illuminance at those points with the illuminance outside the building.
Combination of electric lamp and daylight need some control equipments added to building system. Suitable electrical cables and switches must be applied to support this purpose. Some non-conventional daylight systems can be developed to increase the use of daylight in commercial building. Some examples of these systems are presented in this paper.
Combination of electric lamp and daylight need some control equipments added to building system. Suitable electrical cables and switches must be applied to support this purpose. Some non-conventional daylight systems can be developed to increase the use of daylight in commercial building. Some examples of these systems are presented in this paper.
