A Proposal for the Improvement of Daylight Integration and Distribution in the Educational Interior Space Through a (pro-Sun) Ceiling Design With Curved Surfaces

Abstract

The use of daylight as the primary lighting source in buildings is crucial for achieving energy savings. Significantly reducing the dependence on artificial lighting sources relies on more efficient utilization of available daylight and enhancement of its quantity and distribution within interior spaces. The appropriate use of daylight not only enhances energy efficiency in indoor spaces but also positively impacts users’ health and performance. A growing body of research has focused on methods for maximizing the use of daylight in interior environments. This study proposes a ceiling design aimed at utilizing daylight more efficiently in interior spaces. The quantity of daylight in an educational space was calculated using the VELUX Daylight Visualizer program by comparing the results of existing, diagonal, and curved ceiling designs. Light levels were measured before and after the addition of Pro-Sun to assess daylight integration and distribution in the studios’ interior spaces. The design studio was analyzed based on orientation (north-south), school semester, active hours, and ceiling type. As a result of the comparison of ceiling types, the Pro-Sun ceiling system with curved reflectors had the most daylight integration capacity and distribution in the deeper the studio’s interior space. © 2025 by the authors