Air-to-Cloth Ratios for Baghouse Filters

01/17/26

“How can we determine how to design a bag filter using one value?”

Baghouse filters are one of the most widely used industrial air pollution control technologies in the world. Their ability to stick particulate matter emissions onto bagged filters leads to their high efficiency. But how exactly do we design these machines? Well, what if we take the ratio of the volume of air moving through the cloth filters every minute vs the interior surface area of the cloth filters themselves? This value, termed the Air-to-Cloth Ratios for Baghouse Filters, determines how many volumes of air each square meter of the filters must handle. The higher the air-to-cloth ratio, the faster particles will move through the system, which increases the frequency of particulate matter clogging the filters and forcing more filter cleaning to occur.

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• Earth/Climate science
• Engineering
• Urban Systems