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GWJYonder t1_iv8s69v wrote

Reply to comment by bigdish101 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

Yeah, I have them on my windows (it's really nice, except my cats don't get warm sunspots anymore). So this "breakthrough" may save 31% of power compared to "conventional" windows, but what is their improvement over similarly treated windows? Could just be 1% for all we know.

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