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If you know the FPM and you know the area of your flow say duct work (20"x20")...
first convert your area 20*20=400 in2 to Ft2
20"*20" = 400in2 400in2/144 = 2.7777Ft2
Now that you know the area in Ft2 you can use the equation [ FPM*area(ft2) = CFM ]
if your FPM is 500 and we use the 20"x20" duct then
500fpm * 2.777Ft2 = 1388.5 cfm
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How to Convert cfm to kw?
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