Lighting Upgrades with reduction in light levels
In some applications, ambient light levels can be reduced, particularly in spaces where ambient light is needed only for the task of orientation, in spaces where planned lighting maintenance is resulting in a light level higher than originally planned for, and in spaces where IES light level recommendations have been revised (that is, reduced).
Approaches include dimming, lamp/ballast removal, specular reflectors, reduced-output (lower-wattage lamps) and current limiters.
Lighting Upgrades to Increase light levels
This entails increasing light levels via planned lighting maintenance, specular reflectors, higher room surface reflectances or higher-output lamps and other approaches; after light levels are increased, we are then afforded the options to then reduce light level and save energy as shown under “upgrade with reduction in light levels.”
Lighting Upgrades to Maintain light levels
In these spaces, we need to maintain current light levels but can do so by retrofitting with lighting equipment, such as more-efficient lamps and ballasts, to provide comparable light output at a reduced wattage.
Lighting Upgrades to Focus light levels
In some applications, the overhead ambient lighting system is doing most of the work in the space, providing illumination for both ambient and task lighting. In many of these applications, by providing portable, adjustable task fixtures at the task locations, we can upgrade to reduce light levels in the ambient system, since its primary function will be retasked for orientation only. An example of this approach is an indirect lighting scheme for ambient illumination, with task fixtures.
Lighting Upgrades to Reduce hours of use
Controls such as energy management systems, occupancy sensors and daylight-dimming ballasts can be installed to control the hours the lighting system is used, eliminating waste and reducing energy usage.
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