Air velocity (distance travelled per unit of time) is usually expressed in Linear Feet per Minute (LFM). By multiplying air velocity by the cross section area of a duct, you can determine the air volume flowing past a point in the duct per unit of time. Volume flow is usually measured in Cubic Feet per Minute (CFM).
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| 02/22/2014, 4:40 AM | CFM |
| 06/27/2014, 5:30 PM | Re: CFM |