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Originally Posted by aschen
Maybe, but a quick google didn't turn up any supporting data for me. Windows are transparent in the visible spectra (duh), are supposedly treated by "low-e" coatings for infrared and UV reflectivity.
I would be interested in seeing differences in absorptivity/reflectivity for argon vs air. I suspect it is a high order effect, but not sure.
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There ya go...
Here is a great article on it all.
Understanding Energy-Efficient Windows - FineHomeBuilding
Apparently, when the windows leak the argon, not much changes.
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Argon and krypton are safe, inert gases, and they will leak from the window over time. Studies suggest a 10% loss over the course of 20 years, but that will reduce the U-value of the unit by only a few percent.
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