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  2. United States lighting energy policy - Wikipedia

    en.wikipedia.org/wiki/United_States_lighting...

    The 2009 IECC, chapter 2 defines high efficacy lamps as compact fluorescent lamps, T-8 or smaller diameter linear fluorescent lamps, or lamps with a minimum efficacy of: [21] 60 lumens per watt for lamps > 40 watts, 50 lumens per watt for lamps > 15 watts and ≤ 40 watts, and; 40 lumens per watt for lamps < 15 watts

  3. Talk:Compact fluorescent lamp/Archive 2 - Wikipedia

    en.wikipedia.org/wiki/Talk:Compact_fluorescent...

    Looking at the maths, if 90% of a 60 W bulb goes as heat, then it produces 6 W of visible light. If 30% of the equivalent CFL's energy input is converted to heat, then it produces 7.7 W of visible light. Yet our table says that the first produces 700 lm and the latter only 660 lm. There are clearly discrepancies here.

  4. Compact fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Compact_fluorescent_lamp

    While the purchase price of a CFL is typically 3–10 times greater than that of an equivalent incandescent lamp, a CFL lasts 8–15 times longer and uses two-thirds to three-quarters less energy. A US article stated "A household that invested $90 in changing 30 fixtures to CFLs would save $440 to $1,500 over the five-year life of the bulbs ...

  5. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

  6. L Prize - Wikipedia

    en.wikipedia.org/wiki/L_Prize

    The L-Prize competition was designed to spur development of LED light replacements for 60W incandescent lamps and PAR38 halogen lamps as well as an ultra-efficient "21st Century Lamp". [1] It was established by the United States Department of Energy (DOE) as directed by the Energy Independence and Security Act of 2007 .

  7. High-CRI LED lighting - Wikipedia

    en.wikipedia.org/wiki/High-CRI_LED_lighting

    A CRI of 100 represents the maximum possible value. Lower CRI values indicate that some colors appear unnatural. Incandescent lamps have a CRI above 95. Cool white fluorescent lamps have a CRI of 62, however fluorescent lamps containing rare-earth phosphors are available with CRI values of 80 and above. [2]

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