Positioning of light shelves to enhance daylight illuminance in office rooms

Abstract

This paper aims to improve daylighting by using light shelves. Horizontal light shelf enhances the illuminance in office room interior. By tilting external light shelf more illuminance can be achieved. For uniformity of illuminance tilt able light shelf is the best choice instead of horizontal light shelf. The performance of light shelves was examined through simulations on DIALux and compared with experimental values obtained from a prototype. Substantial improvement in illuminance is obtained in the experimental studies with tilted light shelves on the prototype.