Analysis of Natural Light Distribution in the Building

Abstract

Global warming affect the condition of the sky and also affect the temperature on the earth surface. Changes in sky conditions affect the distribution of light into the building. Sunlight is a natural light source in the morning, afternoon and evening. Utilization of natural lighting into buildings, can reduce energy use as an artificial lighting source. Phinisi Tower Building has a unique form of hyperbolic paraboloid, so it can be a guide in designing buildings. This building needs to be analyzed, how the distribution of light into the building, so it can become a guide in buildings design. The purpose of this study is how the influence of position, floor height and window openings on the building envelope to the distribution of natural light. Quantitative research method is to analyze the level of illumination inside and outside the building in the form of tables and graphs. The result of research is illuminance level of daylight depends on the sky condition and it have affect the light distribution into the building. The increased light distribution at the height of the floor. As well as of window opening on the building envelope (top lighting and side lighting) have effect on the level of illuminance in the building. The distribution of natural light will increase during the day, if the sky condition does not change in one day.