Radial fan flow rate.
Radial fan flow rate.
(OP)
Hi from Mexico.I am looking for a "formula" to find the flow rate of a radial fan. I only know Q is proportional to D(diameter) and to the RPM. There is a formula in turbomahcinery stating that the discharge can be computed by the formula Q=2(PI)rbV, where r is the radius,b is the blade width at r, and V is the velocity. Can this formula be used for a radial fan?. If not, is there exist a theorical formula to calculate he flow rate of a radial fan?. Thanks so much.





RE: Radial fan flow rate.
RE: Radial fan flow rate.
http://www.electronics-cooling.com/html/2001_may_techbrief.html
RE: Radial fan flow rate.
Fan bhp = (CFM x tsp)/(6344 x eff)
Where tsp = in. wg total pressure
eff = decimal efficiency . We typically use 0.65 for centrifugal fans to come up with quick approximation of hp.