The term cubic feet per minute (CFM) is ambiguous when it comes to the mass of gas that passes through a certain point because gas is compressible. Air velocity (distance traveled per unit of time) is usually expressed in Linear Feet per Minute (LFM). The centrifugal fan performance tables provide the fan revolutions per minute (RPM) and brake horsepower requirements for the given CFM and static pressure at standard air density (0.075 pounds per cubic foot). Next type the circular duct dimensions of r = 2 in. Again, a centrifugal fan is a constant volume device that will move the same amount of air at two different temperatures. This cubic feet per minute conversion calculator helps you calculate either of the three namely, the air flow in FPM (Feet per Minute), CFM (Cubic Feet per Minute) and Area in square feet. Convert between many different pressure equivalents. Actual cubic feet per minute is the volume of gas and air flowing anywhere in a system independent of its density. Use this free online calculator to convert cubic feet per minute to cubic meter per hour. However, there is not an agreed upon definition for what constitutes normal conditions. Since 200°F air weighs only 80% of 70°F air, the centrifugal fan will create less pressure. AMCA Standard 210 defines uniform methods for conducting laboratory tests on housed fans to determine airflow rate, pressure, electric power and energy efficiency, at a given speed of rotation. The cubic foot per minute (symbol: CFM) is a the unit of volumetric flow rate equal to that of a cubic foot moving each minute.It is equal 0.000471947 m 3 /s. However, since the 200°F air weighs much less than the 70°F air, the centrifugal fan will create less static pressure and will require less brake horsepower. Just divide the input value by 0.588578 to find cubic meters per hour. Beauty is the first test: there is no permanent place in the world for ugly mathematics.' This online calculator helps you to calculate either of the three parameters namely, the air flow in FPM (Feet per Minute), CFM … Use the below calculator to find the value of air flow in FPM or CFM. Select the unit to convert to in the output units list. Selecting a centrifugal fan to operate at conditions other than standard air requires adjustment to both static pressure and brake horsepower. Convert just about anything to anything else. Bookmark Velocity Converter - you will probably need it in the future. Actual cubic feet per minute (ACFM) is a unit of volumetric flow. It is commonly used by manufacturers of blowers and compressors.This is the actual gas delivery with reference to inlet conditions, whereas cubic foot per minute (CFM) is an unqualified term and should only be used in general and never accepted as a specific definition without explanation.