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Engineering360: "Rethinking the Centrifugal Fan"

05/21/2018 9:58 AM

Read Engineering360 article: Rethinking the Centrifugal Fan.

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#1

Re: Rethinking the Centrifugal Fan

05/21/2018 10:24 AM

"The blades are shallow with a substantial curvature in the direction of rotation that results in a higher blade tip speed than a BC blade."

This doesn't make sense. With the same RPM and the same radius, the blade tip speed would be the same for FC or BC.

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#2
In reply to #1

Re: Rethinking the Centrifugal Fan

05/21/2018 1:08 PM

Thanks for the comment John and you're right. This could have been clearer. It's the air velocity that is different.

V1 = tip (tangential) velocity; V2 = radial velocity; R = resultant velocity

FC = resultant air velocity “R” leaving the blade is greater than the blade tip velocity

BC = resultant air velocity “R” leaving the blade is less than the blade tip velocity

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#3

Selecting Righ Fan for Building Ventilating

06/11/2018 11:39 PM

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#4

Greatly Explained

01/14/2020 2:58 AM

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