07 July 2009

Incandescents: Reports of death greatly exaggerated

The New York Times has a very interesting article on new technology designed to make traditional incandescent bulbs more energy efficient -- enough so that they will likely meet government mandates on efficiency that otherwise would require switching to CFLs.
Normally, only a small portion of the energy used by an incandescent bulb is converted into light, while the rest is emitted as heat. Deposition Sciences applies special reflective coatings to gas-filled capsules that surround the bulb’s filament. The coatings act as a sort of heat mirror that bounces heat back to the filament, where it is transformed to light.

Indeed, the incandescent bulb is turning into a case study of the way government mandates can spur innovation.

Philips Lighting’s Halogena Energy Savers is a line of bulbs now on the market that uses this technology. These are available now at Amazon and Home Depot, according to the Times, but evidently not yet on the Home Depot Web site.

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