Besides the use of daylight, indicated as a primary factor in energy savings in buildings, the positioning of fixtures, as well as their specifications can contribute to environmental comfort and energy conservation. Such concerns, however, are not part of the currently established practice of lighting design professionals. Considering this gap, the aim of this paper is to conduct a study to assess different artificial lighting systems. The research methodology consists of evaluating the lighting performance, such as the uniformity, levels, and distribution of illuminance, as well as the estimated energy consumption of lighting systems through computer simulation. Analyses of daylight were used to make a simplified estimate of energy consumption for different proposals of lighting systems, by dividing the driver circuits. The proposed lighting systems had different photometries and position of the fixtures. The results show significant differences in lighting distribution, as well as in energy consumption, with savings of up to 46% compared with the base case. The main contribution of this study is to establish criteria that can improve the design of electric lighting systems.
Daylighting; Artificial lighting; Energy consumption; Lighting quality
