Dudley Willis, Duke University’s manager of projects and engineering, selected the Cree luminaires for their low energy use, anticipated reduced maintenance costs and sustainable product features that contribute to the university’s green initiative.
Walker Parking Consultants/Engineers, Inc. developed the lighting design around Willis’ requirements, including the need to eliminate light spill outside the perimeter of the parking structure. The challenge was accomplished by shielding the luminaires with Cree's exclusive NanoOptic® technology with backlight control that provides the required sharp perimeter cutoff.
“We are pleased that the installation went very smoothly. We did not encounter the typical 5 percent fixture failure that we see with other types of technology during the initial burn-in period,” said Willis. “We look forward to reviewing the energy use after the first year and comparing to similar installations around campus. If it turns out to be true that we do not have to spend the usual time and effort in changing burned out lamps, this will contribute significantly to the university’s sustainability initiatives. We also liked the aesthetics of the fixtures compared to the look of traditional metal halide, or the industrial look of fluorescents.”