this post was submitted on 10 Jul 2024
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No Stupid Questions

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Secondarily, should the fan be outside or inside the window?

Asking for a friend. (Me, help. I can’t remember physics, it’s too goddamn hot)

Edit: I’ve opened all the windows and set up a fan a short distance from the window pointing out and it’s reduced the temperature to near-tolerable levels. Unfortunately, venting through the attic was a no-go but moving things aside might make it an option next time. Thank you all, I appreciate the help!

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[–] bitwaba@lemmy.world 2 points 4 months ago

No, it should be roughly the same.

The thing you're trying to take advantage of when placing a fan a meter or two from a window is that when you have a moving mass of air and it passes by static air, it "drags" the static air with it. As a result you move more air mass that what was blown by the fan directly out of the fan blades.

A blower fan still blows air in a direction, and can likely take an even bigger advantage than a traditional box fan since a blower fan's output direction will be more orderly aka closer to a laminar flow than a box fan. But the real advantage of the blower style fan is that its enclosure allows you to direct both the intake and exhaust portions of the air being moved.