• The Effects of Adaptive Shading and the Selective Reflector Light Shelf on Office Building Energy Efficiency and Daylight Performance in Hot Arid Regions

      Chalfoun, Nader; Abboushi, Belal Khalid (The University of Arizona., 2013)
      Highly glazed facades have been increasingly built for aesthetics, to achieve green buildings ratings, and to maximize daylight admission. In general, when the window area increases, building energy consumption increases. The objective of this thesis is to provide architects and engineers with a method to increase window area, attain daylight benefits, improve indoor environmental quality, and enhance connectivity to outdoors without increasing the building energy consumption. Adaptive shading was utilized to control solar heat gain and improve daylight performance. Additionally, this research proposed a new type of light shelves, Solar Reflector Light Shelf (SRL), which helps improve daylight while reducing heat gain. COMFEN 4.1 and Energy Plus software were used to simulate different system combinations and options, and to evaluate their performance based on monthly energy consumption, illuminance, luminance, and DGI levels.