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dalwen t1_iv7p1hv 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

Yes, low-e coating. Designed to selectively transmit light in the visible spectrum but block/reflect IR and UV.

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sunybunny420 t1_iv97455 wrote

Yeah this is confusing AF to me I’ve literally have some of this in my Amazon cart for like 2 years

It seems difficult to put on its essentially window tint. It’s shatter-resistant so it helps with flying objects and can make it more difficult for a break-in, and it deflects outside sounds. It’s cheap AF and comes in aqua, green, pink, amber, yellow, blue, black, and “silver” which gives an HD effect to the stuff outside. It’s easy on the eyes, and doesn’t look darker inside, the light’s just not harsh at all.

Reduces indoor temp by up to 12° Plenty of Amazon reviewers have test vids.

Should prob go through with that purchase soon it’s only like $16 but it seems difficult to adhere to the window. It’s v thin and you use soapy water and a credit card to squeege out the bubbles. People say it takes hours to do, so I’ve been procrastinating.

I guess these researchers didn’t try Google Shopping first lol

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professorstrunk t1_iva0ghn wrote

Buy an extra wide squeegee and it’s a whole lot easier. Just keep wetting the surface of the film so the squeegee slides smoothly (Windex works fine).

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Mr_Lucasifer t1_iva333d wrote

I think the difference is that the computer suggested using nanoparticles that are just above the short range of violet light, so blocking out UV light, and... I guess it figured out the correct range for IR. I'm confused about that part myself. Because IR is longer than red, and UV is shorter than violet.

In other words, if you layered a thickness of nano particles on glass in the exact range you wanted to block, visible light would still come through, but not the offending light you want to get rid of. A bit more sophisticated that tinting I think.

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