ten-million t1_iv7bysi wrote
Reply to comment by dryguy in Researchers designed a transparent window coating that could lower the temperature inside buildings, without expending a single watt of energy. This cooler may lead to an annual energy saving of up to 86.3 MJ/m² or 24 kWh/m² in hot climates by mossadnik
Are you kidding? All the low-e glass in windows now has multi layered coatings. They are code required now. Every new window has coatings. I spec out cardinal 366 low-e glass all the time. All the window manufacturers use just a few glass suppliers.
And these coatings save money and save energy. That’s why they use them.
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