Zech08 t1_iv8crrn wrote
Reply to comment by supercrossed 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
They have double paned windows, guessing the air acts as an insulator, dont see why we couldn't add a material inbetween that.
FidelCashdrawer t1_iv8f7op wrote
Indeed window companies do this. They’re called “Low E” (Low emissivity) coatings and do a great job
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