LED bulbs may be finally here. Check out the pharox LED bulb, or buy it here
The table below compares the LED bulb to 40W, CFLs and incandescent bulbs plus 75 W CFL bulbs data.
cost | watts | Lux | Lumens | lifetime (hrs) | Hg (mg) | Time on/day (hrs) | cost | hrs/yr | kwh/yr | $/KWh | Energy $/year | Bulb $/year | Total $/year | 1year$ | 10 yrar $ | carbon /year (Kg) | mercury /year (mg) |
led | 4 | 230 | 50,000 | 0 | 10 | $59.00 | 3,650 | 15 | $0.12 | $1.75 | $4.31 | $6.06 | $60.75 | $76.52 | 6.7 | 0.3 | |
cfl | 9 | 230 | 6,000 | 5 | 10 | $3.00 | 3,650 | 33 | $0.12 | $3.94 | $1.83 | $5.77 | $6.94 | $42.42 | 15.1 | 3.8 | |
incadescent | 75 | 975 | 230 | 1,000 | 0 | 10 | $1.10 | 3,650 | 274 | $0.12 | $32.85 | $4.02 | $36.87 | $33.95 | $329.60 | 125.6 | 6.4 |
N:vision | 19 | 925 | 1,200 | 6,000 | 5 | 10 | $5.97 | 3,650 | 71 | $0.12 | $8.50 | $3.63 | $12.13 | $14.47 | $90.94 | 32.5 | 4.7 |
westinghouse | 18 | 840 | 1,200 | 6,000 | 5 | 10 | $6.00 | 3,650 | 64 | $0.12 | $7.67 | $3.65 | $11.32 | $13.67 | $82.65 | 29.3 | 4.5 |
Phillips Marathom | 21 | 865 | 1,200 | 6,000 | 5 | 10 | $3.00 | 3,650 | 76 | $0.12 | $9.11 | $1.83 | $10.94 | $12.11 | $94.10 | 34.8 | 4.8 |
max lite | 20 | 900 | 1,200 | 6,000 | 5 | 10 | $4.50 | 3,650 | 74 | $0.12 | $8.89 | $2.74 | $11.63 | $13.39 | $93.41 | 34.0 | 4.8 |
sylvania | 19 | 822 | 1,200 | 6,000 | 5 | 10 | $5.75 | 3,650 | 69 | $0.12 | $8.28 | $3.50 | $11.78 | $14.03 | $88.53 | 31.7 | 4.7 |
westinghouse doft | 18 | 830 | 1,200 | 6,000 | 5 | 10 | $6.00 | 3,650 | 65 | $0.12 | $7.80 | $3.65 | $11.45 | $13.80 | $83.96 | 29.8 | 4.6 |
GE | 20 | 843 | 1,200 | 6,000 | 5 | 10 | $5.00 | 3,650 | 72 | $0.12 | $8.67 | $3.04 | $11.71 | $13.67 | $91.72 | 33.2 | 4.7 |
And some good info on mercury in CFL
How much mercury is contained in a CFL?
Each bulb contains an average of 5 milligrams of mercury, “which is just enough to cover a ballpoint pen tip,” says Leslie, associate director of the Lighting Research Center at Rensselaer. “Though it’s nothing to laugh at, unless you wipe up mercury [without gloves] and then lick your hand, you’re probably going to be okay.”
Approximately 0.0234 mg of mercury—plus carbon dioxide, sulfur dioxide and nitrogen oxide—releases into the air per 1 kwh of electricity that a coal-fired power plant generates. Over the 7500-hour average range of one CFL, then, a plant will emit 13.16 mg of mercury to sustain a 75-watt incandescent bulb but only 3.51 mg of mercury to sustain a 20-watt CFL (the lightning equivalent of a 75-watt traditional bulb). Even if the mercury contained in a CFL was directly released into the atmosphere, an incandescent would still contribute 4.65 more milligrams of mercury into the environment over its lifetime.And some info on lux and Lumens
The lux (symbol: lx) is the SI derived unit of illuminance or
illumination. It is equal to one lumen per square metre.
• sunlight on an average day ranges from 32 000 to 100 000 lux
• TV studios are lit at about 1 000 lux [i.e. 1000 lumens
per square metre]
• a bright office has about 400 lux of illumination
• At sunset and sunrise, ambient outdoor light is also about
400 lux (if the sky is clear).
• moonlight represents about 1 lux
• starlight measures a mere 0.00005 lux
And here is the rest of it.
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