Originally Posted by
David Kumm
I'd like to see separation efficiency at 30 microns and down in a curve to 1 micron with the pressure drop at an operating cfm. Also a pressure drop for each filter type and size as well as the recommended cfm for each type and size. We have filtration numbers but don't know at what flow rate so some sq ft vs cfm data would be helpful. If manufacturers gave use those numbers and a cfm vs sp table for their various size impellers we could calculate the proper system by adding the pressure drops of the cyclone and filters to the pipe we use and add a little for hood loss. A great separator that has additional pressure drop would not be necessary if no fine dust is generated or could be mated to the proper impeller and motor to compensate. Systems should be considered as a bunch of separate mix and match pieces and built to meet the needs of the user. I think having those numbers would force the manufacturers to improve their designs or at least offer alternatives to those who desire them. Info regarding filter loading, ease of release, impact of cleaning, and when bags are preferable to cartridges would be educational as well. Dave