Flow Rate Constraints


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The ESC Vortex Study done during the winter of 1992 in several stages used as a Test Tank a vessel with a 2″ TC outlet.  Spool pieces were fabricated for insertion in this 2″ nozzle to simulate a 1″ nozzle and a 1-1/2″ nozzle.  Observations,   and video clips established that partial blockage of the outlet opening would occur at the flow rates  in the table below for 1″, 1-1/2″ and 2″ outlets.  The suggested values for the 2-1/2″ and 3″ outlets were by calculation, supported later by field evaluation of operating commercially installed systems.