30 Jul '12, 11am

The Continuing Revolution in LED Lighting | #avlgb

LED lights have a very long life. The Cree CS18 is guaranteed for five years and rated for 50,000 hours, while the Philips EnduraLED is rated for 30,000 hours—compared to about 20,000 hours for a typical linear fluorescent lamp (for commercial lighting), 10,000 hours for a compact fluorescent lamp (CFL Compact fluorescent lamp. Fluorescent lightbulb in which the tube is folded or twisted into a spiral to concentrate the light output. CFLs are typically three to four times as efficient as incandescent lightbulbs, and last eight to ten times as long. CFLs combine the efficiency of fluorescent light with the convenience of an Edison or screw-in base, and new types have been developed that better mimic the light quality of incandescents. Not all CFLs can be dimmed, and frequent on-off cycling can shorten their life. Concerns have been raised over the mercury content of CFLs, a...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/energy-sol...

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