space_monster t1_iv6wrce wrote
Reply to comment by Kaeny 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
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.
deevonimon534 t1_iv6z84j wrote
Outside curtains?
OldRub1158 t1_iv70s9v wrote
That's called shutters
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!
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
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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