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Product Review from Environmental Building News
July 1, 2000
T-5 Fluorescent Lighting Outshines HIDs
According to energy consultant Jim Rogers, P.E., of Chelmsford, Massachusetts (who co-authored the recent report “New High-Intensity Fluorescent Lights Outshine Their HID Competitors” for E Source, of Boulder, Colorado), there are now at least 14 fixture manufacturers producing high-bay fixtures for long twin-tube or straight-tube T-5 lamps. (The T-5 designation means that the lamps are 5⁄8” [16 mm] in diameter.) These fixtures pack a lot of these very bright lamps (typically four to eight) into a relatively small luminaire with high-efficiency reflectors that deliver almost all of the light output downward....
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