Look at this fan
- Thread starter FlipAPenny
- Start date
Al B. Fuct
once had a dog named
You could start your own fan club with one of these, Penny. 
The fan you're showing (though you haven't given any information about its size or flow rate) looks like a 6-8-10" axial blower. Even if it's a 6", it will do what you're wanting, unless it has to push air through a very long duct or a carbon filter.
Axial fans have a large gap between the blades. Once enough pressure is built up on the exhaust side of the fan, pressure will leak backward through the fan blades. Systems with carbon filters or long ducts with more than one 90 bend should use a centrifugal blower instead. Centrifs have a much smaller gap between the impeller blades and thus can push through a little back pressure.
You need a blower that will change the room air volume in 3-5 minutes. You can calculate the size of the exhaust blower you need; calculate the room volume in cubic feet by multiplying length x width x height. Divide room volume by 3 and by 5. You now have the upper and lower CFM ratings for a room your size.
The fan you're showing (though you haven't given any information about its size or flow rate) looks like a 6-8-10" axial blower. Even if it's a 6", it will do what you're wanting, unless it has to push air through a very long duct or a carbon filter.
Axial fans have a large gap between the blades. Once enough pressure is built up on the exhaust side of the fan, pressure will leak backward through the fan blades. Systems with carbon filters or long ducts with more than one 90 bend should use a centrifugal blower instead. Centrifs have a much smaller gap between the impeller blades and thus can push through a little back pressure.
You need a blower that will change the room air volume in 3-5 minutes. You can calculate the size of the exhaust blower you need; calculate the room volume in cubic feet by multiplying length x width x height. Divide room volume by 3 and by 5. You now have the upper and lower CFM ratings for a room your size.
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