Plant Services - May 2008 - (Page 55) efficiency Lighting This is an advantage for the end user and specifier. Electronic ballasts perform better than magnetic units. The reason is reduced ballast losses and high-frequency operation. Coupled with controllability and dimming management, electronic ballasts help drive the industry to a 100% electronic market, as mandated by government regulations. In fact, the market has embraced electronic ballasts as the preferred choice for additional reasons such as reduced noise levels, flickerfree operation, controllability of harmonic distortions and power factors, to name a few. Table 3 provides several choices for a three-lamp T8 system, which is the prevalent lighting specification for new construction of typical offices and commercial spaces. Using the table data for a typical 10 ft by 12 ft luminaire spacing, it’s possible to achieve 0.6 W/sq. ft. energy loads with a three-lamp T8 system using the low-ballast-factor version. Moreover, using an energy-saving F25T8 lamp would produce 0.5 W/sq. ft. energy loads. Another design opRecessed luminaire optics tion would be to consider selecting a The two luminaire designs for interiors high-light output system (ballast facare directional and diffuse. Directional tor of 1.2) and luminaire spacing of lighting uses the optics from the reflector 14 ft by 16 ft. With adjusted spacing, housing, coupled with the optics from these systems can yield 0.5 W/sq. ft. the louvers (aluminum baffles), which energy loads, but with fewer lumiare parabolic in shape and act as a glare naires andAD.qxp investment. 4:19 PM shield. Diffuse lighting systems usureduced 4/29/2008 Lube Page 1 are precisely tuned to your needs and your type of compressor. Specialized 100% synthetic lubricants for Rotary Screw, Reciprocating, Centrifugal, Vacuum Pump and Turbine. Summit synthetic lubricants are manufactured from the highest quality PAO, Ester and PAG synthetic basestocks. These superior base fluids, coupled with Summit’s unique additive technology, assures our customer that they are getting the best lubricants for their compressors. Summit synthetic lubricants provide an effective alternative to OEM lubricants. Summit synthetics are engineered for specific applications. Higher Performance features: • Selection of viscosity grades • Low pour point • High viscosity index • Excellent water demulsibility • Enhanced oxidative stability • Extremely high and low range of operating temperature • Eliminates sludge and varnish • Extended service life • Higher product purity • High flash point • NSF H1 and Kosher approved lubricants for most applications Call Summit today for a distributor near you. Compressor Lubricants Summit Industrial Products Open plan office area The following is an example of a layout using the latest developments in lamp, ballast and recessed luminaire technologies. Application area • Approximate room size: 9,600 sq. ft. • 10 ft x 12 ft luminaire spacing, 80 luminaires • 2.5 ft work-plane with 80/50/20 reflectances • Ceiling height: 9 ft • Lamp lumen depreciation: 0.95 • 3,100 lumens/lamp (high-output T8 lamp) • Two-lamp energy consumption: 59 W (ballast factor = 1.0) • Luminaire dirt depreciation: 0.94 • Two-lamp F32T8 optically enhanced housing • Average illuminance: 41.4 foot-candles • Uniformity (max./min.): 3.28 • 0.5 W/sq. ft. Lamp components Electronic ballast components 2x4 recessed luminaire Light technical characteristics 1.800.749.5823 P.O. Box 131359 • Tyler, TX 75713 www.klsummit.com ISO 9001:2000 Registered May 2008 www.PLANTSERVICES.com 55 http://www.klsummit.com http://www.klsummit.com http://www.PLANTSERVICES.com
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