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Kaeny t1_iv6uske wrote

Reply to comment by TheSiege82 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

You need curtains or smth lol

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space_monster t1_iv6wrce wrote

curtains don't do much. the glass itself heats up and radiates the heat into the room. you need something on the outside of the glass to bounce IR off it.

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deevonimon534 t1_iv6z84j wrote

Outside curtains?

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OldRub1158 t1_iv70s9v wrote

That's called shutters

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ToxicTaxiTaker t1_iv79pkt wrote

You have no idea how many people don't realize that shutters weren't always purely decorative. In my region actual hinged shutters are a thing of the past, replaced by lame cheap plastic accent pieces that just screw onto the wall.

A good set of shutters with appropriate hardware could mean the world of difference in how your house performs in hot weather. They tend to blow off in heavy storms, but a stronger hinge and latch is all it takes to prevent that. I grew up with a set on my bedroom window, and it was awesome for night shifts too!

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Kittenize t1_iv7ib22 wrote

Blinds like this actually reduced the heat in my house by a substitutial amount. They're installed on the inside

CHICOLOGY Cellular Shades , Window Blinds Cordless , Blinds for Windows , Window Shades for Home , Window Coverings , Cellular Blinds , Door Blinds , Morning Mist, 46"W X 48"H https://a.co/d/aMu1Qyx

Although we basically never look outside now but at least our AC bill is a bit lower

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steve626 t1_iv7y4yz wrote

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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TheSiege82 t1_iv6z0ol wrote

I have shade on the inside. But heat obviously gets in. And while I could do it on the outside that would be a logistical nightmare and eliminate a lot of visible light

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Kaeny t1_iv7p2v7 wrote

Do blackout curtains not work?

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TheSiege82 t1_iv83lyv wrote

I mean it would, but it’s the main room of the house. The main socializing area. So it’s not preferred

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