Propeller Fan Versus Centrifugal Fan For Exhaust
Propeller Fan Versus Centrifugal Fan For Exhaust
(OP)
Wanted to get folks opinion regarding best fan for an exhaust application. Purpose of exhaust fan is to control static pressure in the building. The building will be in full economizer ~70% of the time. When the building is in full economizer the exhaust fan will run. The exhaust fan will be sized in the 5,000 cfm to 8,000 cfm range. I'm still determining the final size.
I'm considering either a propeller fan or a centrifugal blower.
Thanks in advance for you advice and ideas.
I'm considering either a propeller fan or a centrifugal blower.
Thanks in advance for you advice and ideas.





RE: Propeller Fan Versus Centrifugal Fan For Exhaust
If this isn't built yet, have you considered an AHU with a return fan and an economizer cycle?
RE: Propeller Fan Versus Centrifugal Fan For Exhaust
RE: Propeller Fan Versus Centrifugal Fan For Exhaust
If you decide that the opening is too small to limit rise in building pressure, this sounds like a job for a propeller fan.
RE: Propeller Fan Versus Centrifugal Fan For Exhaust
If cost is the main factor then go for an Axial multi Wing but if you are a consultant and want flexibility (i.e.belt change on the centrif pulley) then go for a backward curved centrif. They dont over-load. On the duties you have, you could possibly go for an inline backward curved fan
See NuAire Ltd. UK
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