The fans draw air out of the area on fire and out of the building.
For efficiency these fans drew warm air from an intake at the top of the station.
Make sure that exhaust fans don't draw too much air out, creating a negative-pressure situation in which the pressure inside the house is lower than outside.
At this point, a fan drew a rare cheer by throwing on the ice an octopus.
And we would have instant breezes as the big fan drew air, albeit warmish, through the house.
After the game, the players and the fans drew lessons from it.
A fan draws the insects inside, and the machine then zaps them.
The fan drew their smoke up to it, then pushed it toward the windows.
The fan draws air down through a duct, through the concrete slab and back into the room.
If they use a fan to draw in the air, they can be noisy, however.