A study on the performance evaluation of moblie light shelf system according to the distance between the light shelf and the window

Abstract

Nowadays, building energy management is more important than ever. Especially, lighting energy used in the building occupies 30% of the whole consumed energy. Therefore, reducing the consumption of lighting energy could bring effective energy saving. As the system configuration, the sum of distance between the window and the light shelf reflector and width of light shelf is set to be 500 mm at maximum. The horizontal width of light shelf is set between 200 mm, the angle of light shelf is set between -90 and 90, and the horizontal distance between the window and the light shelf reflector is set between 0 mm and 300 mm in consideration of sum of width of light shelf. The light shelf system suggested in this study can be used as the basic design data for various design elements in a building.