Duct Segment Identification: IN

Since we use feet per second in the flow measurement of ports the formula above the equation becomes: V = 1096.7/60 (18.278) * √¯H/d . V = 353 feet per second (fps) This should be the highest velocity measured in a port flow tested at 28” of water column. Mean Piston speed in linear ft/sec from stroke in inches & RPM (David Vizard) ................
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