|
Long life – lifetimes can exceed 100,000 hours, as compared to 1,000 hours for tungsten bulbs
Robustness – no moving parts, no glass
Size – typical package is only 5 mm in diameter
Energy efficiency – up to 90% less energy used translates into smaller power supply required
Non-toxicity – no mercury
Versatility – available in a variety of colors
Cool – less heat radiation than HID or incandescent
Electric Lighting Consumption
Lighting is the single biggest user of electricity
- Incandescent Light Bulb – 1-4% efficient
- Fluorescent – 15-25% efficient
- LED - 20-52% efficient (60-80% theoretical)
* "DOE Solid State Lighting Status and Future" SPIE Annual Meeting 2004
**J. R. Brodrick, "DOE Solid State Lighting Status and Future" Report for Dept. of Energy
Global Warming / Energy Savings Potential
If a 150 lm/Watt Solid State LED source were developed, then in the United States alone we would:
- Realize $115 Billion cumulative savings by 2025*
- Alleviate the need for 133 new power stations*
- Eliminate 258 million metric tons of carbon*
- Save 273 TWh/year in energy**
* "The Promise of Solid State Lighting" OIDA Report , 2001
**A. D. Little, "Energy Savings Potential of SSL" Report for Dept. of Energy
© 2006-2007 SSLDC, College of Engineering, UCSB
For questions/comments on this content, please contact physicalplant@nwacc.edu
This page was last updated on:
|
