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'Smart' windows adjust to outside climate
July 5, 2011 | Length: 00:02:00
Andre Anders, a senior scientist with Lawrence Berkeley National Laboratory, leads the team that develops technology for "smart" windows. The window glass lets more or less light into a building depending on the climate outside and on settings by an occupant or automated system. The windows have special coatings such as zinc oxide that allow them to darken and lighten.
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Posted by umber34
10th Oct 2011
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>> My name is Andre Andrews; I work at Lawrence Berkeley National Laboratory. I'm a plasma physicist and I apply plasma physics to making thin films with the main application in Windows, particular Smart Windows.
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>> Andre Andrews: The benefit of Smart Windows is mainly an energy savings. We want to reduce the energy needed to cool down a building in the summer or to heat a building in the winter. Our technology is using the plasma phase of very selected materials, and then we deposit these materials on glass. Here's an example--it looks like a piece of glass, it is coated with zinc oxide; in one direction the window becomes tinted and we can control then how much light is going through the window. If you change the polarity, the window becomes clear again. There are estimates of about four quads of energy wasted in the United States or used by windows and a quad roughly is a percent of energy used in the United States. So we're talking about a very large amount of energy that could be saved or used in a better way. Smart Windows right now are being introduced and the main market are commercial buildings. The reason is that these kinds of windows are still relatively expensive. We're working on bringing costs down that you as the consumer would see that money will be saved. Within a few years it will pay off and you have the added comfort of Smart Windows.
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