What moves more air

[R6 Racer]

Another question for the GJ brain trust...
I am trying to make up a couple of air cleaning systems. One will be for an enclosed welding area & the other will be for airborne dust in my woodshop. I have a dust collector in my woodshop now so this will be for what it misses. I am just not sure which type of "fan" would work better (furnace, or blade type, see pics). As well as which one moves more air, how much more air? Is the difference a little like 20% more or is it more like 3 or 5 times more? Will either work? The third pic is just for looking @ my post & maybe helping me out.(Damm I like Canadian girls)

Thanks in advance
Steve

 

[rickairmedic]

Steve the blower mnotor/squirel cage will move considerably more air than any standard fan will. Consider the fact the blower motor has to supply air to an entire house while most fans only supply air in one location .


Rick

 

[Cast Iron Nuts]

uh to hell with the fans I wanna know what the third pic can blow

 

[35mastr]

My vote is number 3.

 

[larry_g]

Its a matter of horse power and blade area. Either will move air. The squirle cage tends to have more blade area for a given package size. I THINK that if you have a 1/3 hp motor pulling FLA driving a fan that the blade design will not matter a whole lot in the movement of free air through a filter.

lg
no neat sig line

 

[creativecars]

All I know about air movement... ********* makes me breath hard.