Modern Approaches To Normalizing Natural Lighting Of Residential Buildings: Research Results

Abstract

In the premises of residential buildings, there are practically no requirements for the conditions of visual work. The light environment is evaluated by the criterion of the saturation of the premises with natural light. The required time of using natural light and providing natural lighting in space are also of great importance here. The task for residential buildings is to link these criteria to create an integrated method of rationing natural lighting in such rooms. The article discusses the modern trends in development of regulations of natural lighting from traditional, using Daylight Factor (D), to the modern ones, connected with dynamic evaluation of day lighting in time and space, necessarily taking into account real statistical brightness distribution on the sky. Evaluation of Daylight Factor method analyses its assessment, energy indicators and provides a comparison with the norms of Germany DIN. The results of research at MGSU on the evaluation of day lighting using the spatial criterion of the light field – cylindrical illuminance, which best describes the saturation of the light of the room are presented. It is noted that the full amount of natural light is not required over the entire area of the living room during the whole daylight hours. In this case, you can find the relationship between D and the coefficient of natural cylindrical illuminance (Dci). This provides a link between traditional regulation and regulation on the saturation of rooms with natural light. The final assessment of the standardized parameters of natural lighting in residential premises is carried out using methods of psychophysics, which can connect the main and secondary factors affecting the comfort of the light environment.