-- to convert the feet to inches, multiply by 12-- to convert the minute to second, divide by 60-- combining these operations, take (feet per minute) and multiply by (12/60) = 0.2
Multiply liters per minute by 0.0353146667 to get cubic feet per minute.
You can convert in w.c. to feet per minute and then convert fpm to CFM. FPm is 4005 times the square root of the pressure. So to convert 1 " w.c. to fpm its the square root of 1, which is 1 times 4005, which is 4005 fpm. Then you multiply the fpm by the area of the space the air is moving through. So if you have 1 " wc moving through a hole that's 1 square foot in area, that's 4005 cubic feet per minute.
You can convert in w.c. to feet per minute and then convert fpm to CFM. FPm is 4005 times the square root of the pressure. So to convert 1 " w.c. to fpm its the square root of 1, which is 1 times 4005, which is 4005 fpm. Then you multiply the fpm by the area of the space the air is moving through. So if you have 1 " wc moving through a hole that's 1 square foot in area, that's 4005 cubic feet per minute.
'F' (feet / minute) x (1 minute / 60 seconds) = (F / 60) (feet - minute / minute - second) = F/60 ft/sec -- Take the number of feet per minute. -- Divide it by 60. -- The answer is the number of feet per second.
To convert face velocity (in feet per minute) to cubic feet per minute (CFM), you would multiply the face velocity by the area of the air intake or outlet in square feet. The formula is: CFM = Face velocity (ft/min) x Area (ft²).
You can't convert those units. Milimeters of water (mmH2O) is a unit of pressure equal to about 13.6 mmHg. Cubic feet per minute is a measure of fluid flow.
You can MEASURE feet per minute. This measure is called velocity. Velocity is how far something has traveled divided by the time it takes to cover that distance. If you already know the velocity in miles per hour, you can convert to feet per minute by multiplying miles per hour by the fraction 5280 / 60, since there are 5280 feet in a mile and 60 minutes in an hour.
-- to convert the feet to inches, multiply by 12-- to convert the minute to second, divide by 60-- combining these operations, take (feet per minute) and multiply by (12/60) = 0.2
5280 feet minute
To calculate CFM (cubic feet per minute) using a manometer, measure the pressure difference across a restriction in the airflow system. Use the manometer reading and the area of the restriction to determine the velocity pressure. Then, use the velocity pressure to calculate the airflow in CFM using the formula CFM = (Velocity Pressure * Area of the Restriction) / 4005.
Cubic feet per minute x 28.3168 = liters per minute
Multiply liters per minute by 0.0353146667 to get cubic feet per minute.
Velocity in a duct can be measured using tools such as an anemometer or a pitot tube. An anemometer measures airflow velocity by detecting changes in air pressure, while a pitot tube measures velocity by comparing stagnation pressure to static pressure. By using these tools, one can determine the velocity of air moving through a duct.
You cannot without knowing the dimensions and shape.
Multiply meters per minute by 3.28 to get feet per minute.
Short for cubic feet per minute, a measurement of the velocity at which air flows into or out of a space.