Sunday February 05 , 2012

Posts Tagged ‘lighting technology’

Green LEDs for Efficient Lighting Using Solar Technology

The folks at the National Renewable Energy Laboratory are applying a fabrication method for building highly efficient multi-junction solar cells to aid in the quest to increase LED efficiency for white light.

Green LEDS

Green light: This gallium-indium phosphide LED was fabricated by researchers at the National Renewable Energy Laboratory.

Solar-cell manufacturing techniques could yield LEDs that require 20 percent less energy.

A new approach to fabricating light-emitting diodes (LEDs) could be used to increase their efficiency by 20 percent while yielding higher-quality light than conventional LEDs. Researchers at the National Renewable Energy Laboratory (NREL) in Golden, CO, have demonstrated the approach by making a yellow-green LED that could soon be combined with other colored LEDs to yield white light. The new LED could help replace current, inefficient methods of generating white light…
-Green LEDs Continued

A&K Energy Conservation, Inc. | HQ:15552 US HWY 301, Dade City, FL, 33523 | 800-228-5241 | akenergy.com

 

Electrodeless lamp (Induction Lighting)

Wiki: Induction Lighting

Credit: wikipedia.org

Induction lighting has been around for a while, but it seems that many do not know what it is or how it works. It’s basically a fluorescent lamp that uses an electromagnetic field to generate light instead of a tungsten metal cathode. The clear advantage here is the longevity of the lamp (in this case it’s called a vessel). Some systems are rated for 100,000 hours. This is obscene when compared to a linear fluorescent T8 system. Even with a premium lamp and programmed start ballast, they have a rated life of 46,000 hours or less than half the life of an induction system.

When choosing a lighting system or technology, It really comes down to what fits the best for your needs or budget contraints. Induction lighting is less expensive than a comparable LED system, but more expensive than a linear T8 flourecent system.

Here is a wiki that goes in to a little more detail about induction lighting:

In contrast with typical electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by means of (electro)magnetic fields. There are three advantages of eliminating electrodes:

Extended lamp life, because the electrodes are usually the limiting factor in lamp life.
The ability to use high efficiency light-generating substances that would react with metal electrodes in normal lamps.
Improved collection efficiency because the source can be made very small without shortening life – a problem in electroded lamps

– Induction Lighting Continued