For Ke=0.577 in H2O-min/ft and Ks=0.00986 in H2O-min-ft/gr, design a reverse-air baghouse to filter 20,000 cfm of air with 2.5 gr/ft3 of flour. Assume a cleaning time of 3 minutes and a filter time of 60 minutes. In your design specify the number of compartments, the filtering velocity, the cloth area per compartment, and the total number of bags required if each bag is 10 feet long and 1 foot in diameter. Also specify the maximum pressure drop that will be experienced during the run.

Estimate the permeability for the dust of the problem above if the bulk density of the dust layer is 12 kg/m³ (0.75 lb/ft3) and the viscosity of the air is 0.05 lb_m/ft-hr. Give your answer in ft²