Dear all,
we are about to define process specifications for a silencer on a vent line. The system pressure is as high as 35 barg and the vent line is open to atmosphere. For a given pipe size with adiabatic compressible flow, we are reaching Mach Number = 1.0 without losing half the pressure of 35 barg as the friction loss on vent line. I am aware that it is not possible to go beyond Mach=1.0. There will be some allowable pressure drop for the silencer itself but I don't foresee this wll be great. Therefore the excess pressure will be lost at the pipe exit due to sudden expansion but I assume that this is not something allowable. Can somebody shed some light on that?
Many thanks
Kind regards