ZapsCosts for Parking Structures


made fluorescent lighting in parking structures not only more cost effective, but also brighter andmore true to life thanmany other light sources. Emitting the same RGB (red-green-blue) lightwaves as


today’s advancedTVs and computer displays, the latest fluores- cent lights can add amargin of safety to parking lots and struc- tures through more accurate perceptions of objects to human eyes and security cameras. At the same time, instant-on capabilities of advanced fluo- rescent fixtures enable motion sensors to be used to control


The energy saved will not only save dollars but also reduce significant amounts of pollution associated with avoidable energy usage.


lighting in parking facilities that are accessed intermittently at night, saving significant energy. Also, in some regions, advanced fluorescent units can use


“addressable” ballasts that can be remotely controlled by Inter- net or cell phone, or switched to control complete facilities by utilities for loadmanagement. Advanced fluorescent lighting fixtures have also been


designed to provide for future conversion to LED lighting – when that technology has been proven to meet anticipations in reliability and costs. “Much of the excitement about LED street lighting is


understandable,” says Larry Leetzow, President of lighting sup- plierMagnaray (www.magnaray.com). “Althoughmore expen- sive than other light sources in initial purchase price, LEDs have a much longer lifespan and consume much less energy than sources such a HID lamps.” Leetzow adds that forward-thinking cities are accomplish-


ing significant energy and maintenance savings today by installing advanced RGB fluorescent street lighting units that provides improved light quality at lower overall cost.


Running the numbers The state of Arizona’s property management company,


OpusWest, wanted to solve a maintenance and lighting prob- lemfor some of its parking garages, and called Phoenix distrib- utor Hart Lighting for assistance. It recommended a 106-watt parking garage unit, which


comprises two 50-watt, twinT5 lamp housingswith one remote ballast to replace two 175-watt metal halide units in each six- car parking bay. This system provides superior lighting, with less glare and truer color, plus instant-on capability, which can enablemotion sensing to achieve added energy savings. “The initial costs are relatively the same as with HID sys- tems,” Leetzow says. “However, using twinT5 lamps and ‘pro-


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gram start’ ballasts, the fluorescent lamps have a much longer life expectancy of 40,000 to 45,000 hours with 12- to 24-hour burn cycles. Total consumption for the two-unit assembly is 106 total watts per bay, less the one-third of the 390-watt consumption of metal halides.” Mark Stromgren, Chief Engineer for OpusWest, says that


while the improved light quality makes people safer and more secure, the big payoff is better light quality, with a 70%savings in energy and 50% savings in maintenance, which are expected to pay for the HID-to-fluorescent lighting conversion in less than two years. The state of Arizona has since mandated the use of this


instant-on fluorescent systemfor all future parking structures. Ed Sullivan is a Hermosa Beach, CA-based writer.


PT r Parking Today


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