My window fan says air can be exchanged with a single window.
Best if the fan has two blades moving in different directions.
Air exchange will work with a fan blowing in or out only. Leave the louvers around the fan closed, close the room door and air has to escape through the window around the fan.
My room gets very chilly by morning doing this.
JeeBaiChow@lemmy.world 23 minutes ago
Trying to iimagine a fan with blades in different directions…
Feathercrown@lemmy.world 16 minutes ago
Window fans have two sets of fan blades side by side. They can spin in opposite directions.
NeatNit@discuss.tchncs.de 2 minutes ago
Why?