The future of lighting is likely to be LED based. A life-cycle assessment study by OSRAM Opto Semiconductors compares the life cycle environmental impacts of three types of lamps: a 40W incandescent lamp, an 8 W compact fluorescent lamp (CFL), and an 8 W LED lamp with 6 LEDs -- compared on the basis of luminous flux (345-420 lumen) as well as color temperature and rendering, and a lifetime of 25,000 hours. This translates to 25 incadescent lamps, 2.5 compact fluorescent lamps and 1 LED lamp. Here are their results in Kg of CO2e:
|
|
Manufacture |
Use |
|
Incandescent |
3.5 |
564 |
|
Compact fluorescent |
2.2 |
113 |
|
LED |
2.4 |
113 |
The use phase dominates (manufacturing contributes less than 2% of life-cycle GHG emissions) and the LED lamp is competitive with CFL based on current technologies.
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Posted by: Explosion Proof Lighting | January 07, 2010 at 02:33 AM