Whiteboard - Fan Laws

Bob Blanchard of the Ontario Sheet Metal Workers Training Centre explains the equations behind three Fan Laws and how to use them in the field.
This video is part of the TAB Technical Manual Training Course for sheet metal workers who want to develop technical HVAC skills. Produced by the Ontario Sheet Metal Workers Training Centre www.osmwtc.com/

[@sicknick282]

I like the way you explain it. Thank you very much sir.

[@umarkhan-ze8qf]

Pulle diameter and air flow
pd2=pd1×(cfm2/cfm1)
Rpm and air flow
Rpm2=rpm1×(cfm2/cfm1)
Static pressure and air flow
Sp2=sp1×(cfm2/cfm1)spare
Amp draw and air flow
Amp2=amp1×(cfm2/cfm1)cudied

[@asbonmarpaung4307]

May i get your email?

[@munthasirmi777]

Very helpful explanation sir...

[@umarkhan-ze8qf]

And Is that total static pressure?

[@incognitofurtive5274]

2.4x1.235 (should have been squared) right?

[@PiterYan]

1,235 is already squaed

[@SD_13_]

7200 / 6400 = 1.125
1.125 X 1.125 = 1.265
1.265 X 2.4 = 3.037” W.C.
How did we get two different answers? Can someone explain… 😂