The impact of low light reflectance value (LRV) surface position on interior space illumination

This research is focusing on the impact of changing position black painted side room (dark surface, or wall, ceiling floor) interior space illumination to determine best for dark surface inside room. The rectangular have six sides including and floor, every a it could be covered with low high LRV material, but this painting covering illuminance space. So, aim least negative if get material workplane illuminance. depends DiaLux program simulation compare between different models, found out that one reduce more than half minimum had maximum And place (wall, makes results vary why it's important consider which wall painted. Painting south (opposite window) affect uniformity. window east worst effecting natural lighting.