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.
To calculate the average slot velocity in feet per minute (fpm), first convert the airflow from cubic feet per minute (cfm) to the area of the slot. The area of a 1-inch by 72-inch slot is 1/12 feet by 6 feet, which equals 0.5 square feet. Using the formula: [ \text{Velocity (fpm)} = \frac{\text{Airflow (cfm)}}{\text{Area (sq ft)}} ] [ \text{Velocity} = \frac{1500 \text{ cfm}}{0.5 \text{ sq ft}} = 3000 \text{ fpm} ] Thus, the average slot velocity is 3000 feet per minute.
Take the number of cubic feet and divide that by the number of minutes. cfm=cf/m
To calculate BTUs from CFM (Cubic Feet per Minute) and wet bulb temperatures, you can use the formula: BTUs = CFM × 4.5 × (Wb1 - Wb2), where Wb1 is the wet bulb temperature entering the system and Wb2 is the wet bulb temperature exiting the system. This formula accounts for the energy required to change the moisture content of the air. Be sure to convert temperatures to the same unit (usually Fahrenheit) before applying the formula.
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 Ft220"*20" = 400in2 400in2/144 = 2.7777Ft2Now 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 then500fpm * 2.777Ft2 = 1388.5 cfm
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.
To convert cmh to cfm ..... divide cmh by 1.7 to convert into cfm....
To calculate CFM (cubic feet per minute), you need to know the volume of the space in cubic feet and how many times you want to replace the air within one minute (air changes per hour rate). Multiply the volume of the space by the air changes per hour rate and divide by 60 to get the CFM required for that space. CFM = (Volume in cubic feet * Air changes per hour) / 60.
Tr = cfm/400
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.
To convert BTU (British Thermal Units) to CFM (Cubic Feet per Minute), you need to know the specific heat of the material being heated or cooled. The formula to convert is: CFM = (BTU/hr) / ((Temperature rise in °F) x (Specific heat of material)).
Coverting MMSCFD which is million standard cubic feet per day to CFM or cubic feet per minute requires knowing how many minutes are in a day. This can be determined by multiplying 60 by 24 and then dividing the MMSCFD by this product.
divide by 60
formula
1,000 cfm (feet3/min) is 0.4719474 m3/sec.