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Am I going to reduce a room’s temperature covering a huge hopper window with either paper or reflective aluminum foil, but leaving the window a bit open when the sun shines directly into the window? (linux.community)

submitted 2 days ago by eli04@linux.community to c/asklemmy@lemmy.ml

15 comments fedilink hide all child comments

I need an air current in this room, even when the sun shines directly into it.

I was thinking covering the hopper window with either paper or reflective foil and leaving it a bit open, but I don’t know if this is a stupid idea.

A closed window means an unlivable room.

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[–] nutomic@lemmy.ml 12 points 2 days ago (1 children)

Open all the windows during night time when its cool, close windows and shutters during daytime. If you dont have shutters, put foil on the outside of the window, not inside. Also use a fan for air flow.

[–] cynar@lemmy.world 2 points 2 days ago

Outside is better, but inside is often a lot easier and almost as effective. Most glass blocks IR (heat). If you reflect it back out before it gets converted, it will exit fine. In practice it's a few % difference, depending on the foil.