FUNDING: DAYLIGHT HARVESTING THROUGH GEOMETRIC BUILT FORM

75% of all electricity produced in U.S. is expended in the construction and operation of buildings. Of that energy, 14.4% is typically devoted to fluorescent or incandescent lighting. However, in commercial buildings, this percentage can be as much as 60%. On Princeton University’s campus, we have identified at least 14 buildings (being E‐Quad, Bowen, Friend, Comp Sci, Wallace, Corwin, Fisher, Arch, Woolworth, McCosh, Gyot, Powers Field, Fine and Peyton) that use Venetian blinds to reduce solar gain and glare. Unfortunately, these blinds fail to redirect lighting into the office space. As a result, we switch on incandescent or fluorescent lighting in our offices, classrooms and labs throughout the day. In contrast, daylight harvesting uses daylight to offset the amount of electric lighting required to adequately light a space which can reduce the energy consumption between 20‐60% . Recent research in computer graphics and architecture has focused on the potential of caustics, the bundling or diverting of light rays by reflection and refraction of a surface, to esthetically enhance the quality of spaces. We propose to draw on these recent developments and advance them through development into a design methodology for campus‐specific daylight harvesting systems. Our research goal is to investigate how lighting and structural performance can be integrated into a single, daylight harvesting surface that reduces the operational energy consumption of a typical campus building.