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Due to recent needs of studies on the energy issue, various studies regarding the light shelf which is a solution for lighting energy reduction are being carried out continuously. However, previous studies regarding the light shelf only focus on the performance evaluation according to simple variables of light shelf, so these studies cannot be used as preliminary data for light shelf design. Therefore, the purpose of this study is to carry out the simulation performance evaluation of light shelf according to the Light-Shelf, Gambrel Ceiling and Pyramid Ceiling which are special shape of space and to draw proper solutions. On the winter solstice, optimal light shelf dimensions were equally drawn to be 1.2m and less in width and 10˚ in angle, in consideration of lighting performance and uniformity factory, irrelevant of ceiling height, in the case of gambrel ceiling and pyramid ceiling.

A study on optimal variable of light shelf based on the gambrel ceiling and pyramid ceiling for the advanced daylight performance