To the degree that there would be less heating of indoor air, there might be a bit more heating of outdoor air near the window from the UV and IR the window reflects, but the volume of outside air is so tremendously very much larger than the air in a room, it would be very hard to notice. The amount of heat dumped outdoors by an air conditioning unit would be a lot higher in comparison.
To the extent that it reduces the use of air conditioning, it would result in less energy consumption, hence less greenhouse gas emission. So you could argue that it helps keep outdoor temps lower.
dryguy t1_iv6dlmx wrote
Reply to comment by ageispolispura 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
| Wouldn't it make outdoor temps higher?
To the degree that there would be less heating of indoor air, there might be a bit more heating of outdoor air near the window from the UV and IR the window reflects, but the volume of outside air is so tremendously very much larger than the air in a room, it would be very hard to notice. The amount of heat dumped outdoors by an air conditioning unit would be a lot higher in comparison.
To the extent that it reduces the use of air conditioning, it would result in less energy consumption, hence less greenhouse gas emission. So you could argue that it helps keep outdoor temps lower.