Study of Indoor Lighting Uniformity with Revolving Light Shelf

Light shelf is one of the devices to help the penetration of light into the building. Research discussing the light shelf starting from the shape, position and variations have been conducted to maximize its performance. Most of these variations are in a static state even though the sun has movement throughout the day. While numerous studies have explored light shelf configurations, there is a lack of research on the dynamic adjustment of light shelves in response to changing angles, particularly in tropical climates The primary objective of this study is to investigate the effectiveness of a revolving light shelf in enhancing indoor lighting uniformity in tropical climates. The method used in this research is computer simulation with Dialux Evo 8.2 software. The results indicated that after analyzing and selecting the best angle based on the Lighing Uniformity value and average light intensity, it can be seen that there is a pattern in each orientation. Judging from the efficiency of light shelf movement, the south side has the least movement, which only moves from 30 ⁰ to 45 ⁰ . The most movement is on the west side light shelf..