ANALYSIS OF THE INFLUENCE OF LIGHT REFLECTION COEFFICIENTS ON PHOTOMETRIC CALCULATIONS

Abstract

The article presents the results of simulation tests carried out in the DIALux program concerning the influence of light reflection coefficients on photometric calculations. The analysis was made for two exemplary rooms for various purposes and for different capacities. For each of the rooms, the parameters of the calculation plane have been defined. The lighting fixtures were good depending on the work being done in each of the rooms and the height of the ceiling. The standard reflection coefficients for each room have been pre-assigned. The number of fittings and placement is planned in accordance with the lighting standard. Photometric calculations were made for different values of co-factors, while maintaining the initial values of the other two coefficients. The results obtained were compiled and compared in terms of the impact of variability of coefficients on average illumination and its uniformity. For extreme cases that do not meet the lighting standards, the optimized arrangement of the luminaires was proposed and the results obtained were presented. The research has shown that in the case of the rooms in question, the biggest influence on the results of photometric calculations has the reflectivity of light from the walls. Discrepancies between the intensity obtained in the case of smaller rooms indicate how important factor in the lighting design process is information about the planned interior design.