steve626 t1_iv7y4yz wrote
Reply to comment by space_monster 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
The glass reflects IR energy both ways. The windows are bouncing the heat back inside of the building too. Which is helpful in winter
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