You need 350 to 400 cfm per ton (12,000 btu) of cooling. So, divide your cfm by 400. For example, a 1200 cfm blower on an air handler could handler up to 3 tons. All calculations depend on your duct being the proper size for the equipment.
cfm=.32X(aXb)Xface velocity/144 a= width b=length
The relationship between cubic feet per minute or cfm and cubic meter per hour or cmh is that there are approximately 0.59 cfm in 1 cmh. Similarly, 1 cfm is equal to approximately 1.7 cmh.
There are 400 cfm in 1 ton
Take the number of cubic feet and divide that by the number of minutes. cfm=cf/m
20tr cfm calculatin
formula
You need 350 to 400 cfm per ton (12,000 btu) of cooling. So, divide your cfm by 400. For example, a 1200 cfm blower on an air handler could handler up to 3 tons. All calculations depend on your duct being the proper size for the equipment.
AFU
increase the cfm for the ahu
The CFM of the equipment are given, how to calculate Static Pressure for it.
by u tube manometer
20x20
Cubic Feet Per Minute, or CFM, refers to the measurement for finding the air volume velocity. It is calculated using the formula: CFM = (fpm * area); where fpm denotes feet per minute.
To calculate the horse power of a compressor one would need to use the following calculation. Pump ratio x GPM @ 100 psi = CFM. For a gas compressor divide CFM by 2 and for an electric compressor, divide CFM by 4. GPM is gallons per minute and CFM is air consumption in cubic feet per minute.
Sensible heat =1.04*cfm*(entring air temp.(f)-leaving air temp.(f))
An ahu is an alternative name for the Asiatic gazelle.