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灌水天才幽默大师宣传大使贴图大师元老勋章原创先锋特殊贡献奖时尚之星优秀斑主最佳新人
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发表于 2010-1-14 19:50 | 只看该作者

Efficiency Comparison of LED versus Traditional Lighting

Efficiency Comparison of LED versus Traditional Lighting Note: Based on energy cost of $0.1879 KwH, 24 hours per day for one year. FT 40W, IB 100W, LED 15W
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Lighting Comparison ChartLighting TypeEfficacy (lumens/watt)Lifetime (hours)Color Rendition Index (CRI)Color Temperature (K)Indoors/OutdoorsIncandescent Standard \"A\" bulb10–17750–250098–100 (excellent)2700–2800 (warm)Indoors/outdoorsTungsten halogen12–222000–400098–100 (excellent)2900–3200 (warm to neutral)Indoors/outdoorsReflector12–192000–300098–100 (excellent)2800 (warm)Indoors/outdoorsFluorescent Straight tube30–1107000–24,00050–90 (fair to good)2700–6500 (warm to cold)Indoors/outdoorsCompact fluorescent lamp (CFL)50–7010,00065–88 (good)2700–6500 (warm to cold)Indoors/outdoorsCircline40–5012,000 IndoorsHigh-Intensity Discharge Mercury vapor25–6016,000–24,00050 (poor to fair)3200–7000 (warm to cold)OutdoorsMetal halide70–1155000–20,00070 (fair)3700 (cold)Indoors/outdoorsHigh-pressure sodium50–14016,000–24,00025 (poor)2100 (warm)OutdoorsLow-Pressure Sodium60–15012,000–18,000-44 (very poor) Outdoors
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