Spectrally Selective Windows
From Zissil
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|data6 = Spectrally Selective Glazing, Spectrally Selective Glass | |data6 = Spectrally Selective Glazing, Spectrally Selective Glass | ||
|header7 = Description: | |header7 = Description: | ||
− | |data8 = A window glazing that permits some portions of the solar spectrum to enter a home while blocking others | + | |data8 = A window glazing that permits some portions of the solar spectrum to enter a home while blocking others.}} |
− | '''Spectrally selective glazing''' is a tinted or coated window glazing that has optical or solar properties which vary across the solar spectrum. These glazings typically offer a low transmission of solar gains in conjunction with a high transmission of visible light | + | '''Spectrally selective glazing''' is a tinted or coated window glazing that has optical or solar properties which vary across the solar spectrum. These glazings typically offer a low transmission of solar gains in conjunction with a high transmission of visible light. |
== Spectrally Selective Windows == | == Spectrally Selective Windows == | ||
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=== Glass Tints === | === Glass Tints === | ||
− | Spectrally selective glazings often feature a slight green or blue appearance. The tint is slight, however, because the visible light is transmitted relatively evenly over the visible spectrum. These tints don't affect the U-Value or thermal insulating value of the window. The most energy efficient spectrally selective replacement windows, are | + | Spectrally selective glazings often feature a slight green or blue appearance. The tint is slight, however, because the visible light is transmitted relatively evenly over the visible spectrum. These tints don't affect the U-Value or thermal insulating value of the window. The most energy efficient spectrally selective replacement windows, however, are so slightly tinted as to be unnoticeable. |
=== Tempered Glass === | === Tempered Glass === | ||
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=== Cost Savings === | === Cost Savings === | ||
A spectrally selective window should, when used in combination with windows that offer sufficient [[Window U Factor|U-Factor]] values, allow the homeowner to realize a return on the investment within four to seven years in reduced energy bills. | A spectrally selective window should, when used in combination with windows that offer sufficient [[Window U Factor|U-Factor]] values, allow the homeowner to realize a return on the investment within four to seven years in reduced energy bills. | ||
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