They also can eliminate the glare reflected on computer screens. Luminaire Replacement Instead of upgrading individual luminaire components, consider the labor savings and quality improvements that may be achieved with new luminaires that feature high-efficiency components. The results will be low glare, high-efficiency, and uniform distribution. Deep-cell parabolic louvers are particularly appropriate in classrooms with computers. Because the light sources are completely shielded from view, indirect systems provide relatively high visual comfort.
Indirect lighting is ideal for libraries because it provides even illumination on vertical surfaces.
Controls Controls offer the greatest energy savings potential for the classroom. Schools have a large portion of space that is unoccupied at various times during the day and can benefit greatly from control systems. At Catholic University in Washington, D.C., Green Lights Implementation Director Bob Burhenn installed light loggers in fixtures around the Catholic campus to determine the number of hours the lights were actually used per week. One lecture hall's lights logged 72 hours but it was only occupied 18 hours that week. The hall was empty for 75 percent of the lighting hours.