What is Air-to-Cloth Ratio?
The air-to-cloth ratio, describes how much dirty gas passes through a given surface area of filter.
The air-to-cloth ratio (or air-to-media ratio) is the amount of air (in cubic feet per minute, or CFM) flowing through each square foot of filter media in a baghouse. It’s a basic measurement of how hard the system is working to move air through the filters.
AIR TO CLOTH RATIO CALCULATOR
Importance of Air-to-Cloth Ratio in Baghouse Design
A high or aggressive air-to-cloth ratio essentially means too much air and dust is being pushed through too few filters, too small of a dust collector. Larger airflows and greater dust loads require more filter area in order to work properly. Also, other factors such as the type of dust, dust load, temperature, humidity and the chemicals present in the gas stream may require a more conservative air-to-cloth ratio in order to function properly.
Note: This calculation should be used as a reference only. Baghouse performance depends on other factors such as dust type, temperature, and system design. Be sure to consult a dust collection expert like Baghouse.com for accurate design advice.