THE EFFECT OF OPENING DISTRIBUTION AREA MODIFICATION ON HORIZONTAL LIGHT PIPE DAYLIGHT PERFORMANCE

A deep-plan office building design limits daylight access on the workspace distant from side window. Horizontal Light Pipe (HLP) is one of light transport systems that can deliver to these areas. The research aim was explain and evaluate effect HLP’s opening distribution area performance at deep plan-private space. method experimental with simulation as a tool. Daylight level base case, HLP an 6.6 m2 were compared 3.41 m2. results showed both cases distributed uniformly. 50% reduction area, improved average Factor big 6.42%. smaller be applied main source spaces