 |
|
|
|
|
|
 |
|
Then & Now from Environmental Building News
August 1, 2005
Sulfur Lighting No Longer on Track
Ten years ago we covered sulfur lighting, then a new light source that offered promise for high efficacy (about 100 lumens per watt), good color rendition (CRI of 80), highly concentrated light (130,000 lumens from a light source the size of a golf ball) lending itself to light-tube distribution, very long lamp life, and avoidance of mercury (which is used in fluorescent and HID lighting)—see EBN Vol. 4, No. 4. Fusion Lighting, Inc., had just installed high-visibility prototypes at the U.S. Department of Energy (DOE) headquarters (at the Forrestal Building) and the National Air and Space Museum, both in Washington, D.C., and was moving ahead full-steam with product development. As an indication of the promise, at the Forrestal Building DOE replaced 240 175-watt mercury-vapor HID lamps with a 240' long (73 m) 10"-diameter (250 mm) light tube powered by two sulfur lamps, one at each end; this system produced four times as much light at one-third the cost, compared to the lights it replaced. Indeed, the technology looked extremely promising....
To read the complete article, please login below.
This article is available to members of BuildingGreen Suite
Join now for access to the entire website.
Membership in BuildingGreen Suite gives you access to all of the product descriptions, articles, project case studies, and other content on BuildingGreen.com. Regular individual membership costs $199.00 per year, however many membership options are available.
More about the benefits of membership...
|
|
|
|
|
|
|
|
|
|
|