Daylight Factor Estimation Based on Data Sampling Using Distance Weighting

Many of the architectural design which incorporates natural light through the window design based on assumptions and empirical review that is not measurable. The entry of natural light into the space affects the level of energy efficiency to the use of artificial lighting. The large number of lumens from the light source that will fall on the surface of the room on every square feet (sq ft) would affect the value of illumination in the room. This study was conducted to determine the size of the lighting distribution of sunlight in the room. The method used is the direct measurement in the study area, collecting measurement data and map the numbers into a formula the density distribution of incoming light by using a mathematical equation to further simulate the density distribution of daylight that enters the room apartments and distribute the value of illumination with daylight factor. Simulation of light distribution daytime (daylight) used a simple method, which can result shows the distribution of light from the highest intensity to the lowest intensity. The results showed that the value of the existing distribution are useful to conduct a study follow-up study on the distribution of light in the room. Illumination distribution is expected to be useful for the design of spatial structure for architects.