May 12, 2010 1:39 PM by Bea Karnes, News First 5
Denver-based technology company RavenBrick has developed a "smart" window that can transform itself to maximize energy efficiency. The Raven Window Filter responds to sunlight and temperature to change the tint of the window, allowing more or less light into a building.
RavenBrick CEO Alex Burney says the filter can reduce a building's energy consumption by 30 to 40 percent. In the summer, the filter tints itself to keep sunlight out. But in the winter, the sun can still warm the house. Aerospace engineer and author Wil McCarthy created the filter, which is placed between the two sides of a double-pane window.
Some of the first filters will be installed at the National Renewable Energy Laboratory in Golden this summer.