fml87 t1_ivak9lj wrote
Reply to comment by DogsSureAreSwell 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
In theory maybe but not in practice. The vast majority of the heat will be carried into the room via convective current. You’re also not going to get 50% heat transfer back out of an insulated window vs a sheet of fabric.
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