The Analysis and Assessment of Lighting System in Mass Residence Building on the Example of Dormitory in Warsaw

In this paper the analysis and assessment of the existing lighting system in one of the students' dormitories in Warsaw is presented. It is one of the first steps of the project “Thermo-modernization of two chosen public buildings according to nZEB standards”. We characterized the analyzed building focusing on the characteristics of the interiors and lighting equipment used. The study covered a detailed inventory of the lighting system as well as the measurements of illuminance distributions on task areas in the interiors. On the ground of the results the levels of the average illuminance and illuminance uniformity on task areas in the interiors were calculated, analyzed and compared with the required values for this type of facility. The levels of the lighting installed power density and normalized power density in the interiors were calculated and analyzed either. Moreover, the installed power density and total annual energy density for the lighting system in the building were calculated. On the ground of the results the lighting energy efficiency for the analyzed building was stated. The results of the lighting conditions and its energy efficiency assessment are a reference to the planned in the further studies lighting proposals to improve the quality of the luminous environment in the interiors and energy standard in the dormitory.