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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To convert feet per minute (FPM) to cubic feet per minute (CFM), you need to multiply the FPM by the cross-sectional area of the opening in square feet through which the air is moving. The formula is CFM = FPM x Area.
To convert cfm (cubic feet per minute) to kW (kilowatts), you first need to know the efficiency of the system. Once you have the efficiency, you can use this formula: kW = (cfm x pressure x efficiency) / 229. upheld wp-admin css where pressure is in psi.
You cannot directly convert pressure (Pa) to volumetric flow rate (cfm) as they are different units. You would need additional information such as the temperature and cross-sectional area to convert pressure to volumetric flow rate using the ideal gas law.
The formula for heat and air units is typically calculated using the formula: BTU = (CFM x ΔT x 1.08) where BTU represents British Thermal Units, CFM is Cubic Feet per Minute, ΔT is the temperature change in degrees Fahrenheit, and 1.08 is a constant for air with a density of 0.075 pounds per cubic foot.
3,960 feet per minute.
To convert kilopascals (kPa) to cubic feet per minute (CFM), you need to know the flow rate of the gas or air in question and the pressure in kPa. The specific conversion factor will depend on the specific gas being used, its temperature, and other factors. You may need to consult engineering tables or use online conversion tools to perform an accurate conversion.