so that air can flow in and out of different sides of the same window, instead of having to have two windows, one with air flowing in and the other with air flowing out
so that air can flow in and out of different sides of the same window, instead of having to have two windows, one with air flowing in and the other with air flowing out
NeatNit@discuss.tchncs.de 5 hours ago
Oh, so it’s effectively two independent fans. I misunderstood before.
HonoraryMancunian@lemmy.world 4 hours ago
I too was imagining an overlaid set of counter-rotating blades