Correlated color temperature of daylight: Dynamic analysis in sunlit indoors

Abstract

Currently daylight studies are focused on visual amenity. This new trend arises from the need of professionals and researchers to define indicators of daylight quality. One such indicator is the correlated color temperature (CCT). In this paper, the influence of windows orientation and shading systems in color perception of the environment (CCT) is discussed. To achieve this goal a dynamic (spatial and temporal) characterization methodology of daylight source CCT is proposed. The analysis was performed on a scale model of an indoor space, under clear sky conditions. Results showed the importance of the window orientation in the indoor CCT of daylight, obtaining variations of up to 50 %. It is also noted that shading device cause changes in indoor configurations and sensations. Also here the impact of shading systems and glass on the TCC of natural light entering a space was analyzed.