Tr = cfm/400
A rough number would be 0.8 CFM / sq ft
Call a Test and Balance Agency.
Snot
"CFM" and "CMH" are rates of flow, typically of air or other gases, used to describe the capacity of an HVAC or air handling system, or of a fan. CFM = cubic feet per minute CMH = cubic meters per hour (1 ft3/min) x (meter/3.28084 feet)3 x (60 min/hour) = 1.7 m3/hour 1 m3/hour = 0.5886 ft3/min
It is used at such places where we need to have high volume Or high CFM with low velocity and it can maintain its velocity till 5 meters of length
To convert cmh to cfm ..... divide cmh by 1.7 to convert into cfm....
divide by 60
1 tr is equivalent to how many hp?
1,000 cfm (feet3/min) is 0.4719474 m3/sec.
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)).
Cmh = cubic meters per hour cfm = cubic feet per minute m3/hr * 35.3ft3/m3 * hr/60minutes = ft3/minute So, 1 cmh = 0.5883 cfm
1 tr = 2.4 usgpm
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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
To convert cubic feet per minute (CFM) to pounds per square inch (PSI), you need to consider the context, as they measure different things: CFM measures volumetric flow rate, while PSI measures pressure. You cannot directly convert CFM to PSI without additional information, such as the characteristics of the system (pipe diameter, airflow resistance, and temperature). Typically, you would use formulas from fluid dynamics, involving the ideal gas law or specific equipment characteristics, to find the relationship between flow rate and pressure in a given application.
CFM is a Volumetric Flow Rate while m/s is a velocity, you need the additional measurement of the Cross Sectional Area of the flow to fully work it out.Since there are 2118.88 CFM : 1 m3/s41.3 CFM divided by 2118.88 = 0.01949 m3/sDivide this by the area in m2 & you will get m/s.