What is the difference between cfm, acfm and scfm?
cfm: the amount of air flow delivered under specific conditions, usually expressed in cubic feet per minute. acfm: (actual cubic feet per minute) flow rate of air at a certain point at a certain condition at that point. scfm: (standard cubic feet per minute) flow of free air measured and converted to a standard set of reference conditions (14.5 psia, 68°F, and 0% RH).