V

Hopper rßlowpipe

Hopper

Hopper

FIG. 5.16.11 Pulse-jet cleaning in outside collectors.

the sum of the pressure drop across the clean fabric and the pressure drop across the dust cake as follows:

where:

v = the filtration velocity Kj = the flow resistance of the clean fabric K2 = the specific resistance of the dust deposit w = the fabric dust areal density

Kj is related to Frazier permeability, which is the flow through a fabric in cfm/ft2 of fabric when the pressure drop across the fabric is 0.5 in w.g. as follows:

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