Gas blow-off attenuator

Details Gas blow-off attenuator Gas blow-off attenuator

F - Mech Eng,Light,Heat,Weapons

01

N

172/39

F01N 1/02 (2006.01) F16L 55/02 (2006.01) G10K 11/16 (2006.01)

Patent

CA 1329141

ABSTRACT A gas blow-off noise attenuator comprising two or more perforate diffusion members through which gas is arranged to pass in succession wherein the total free area of perforation in each member increases in successive stages to ensure that sonic fluid velocity occurs through one of the stages and at any mass flow within a predetermined range from a low value up to the maximum mass flow through the unit, and wherein the pressure ratio across the final diffusion member is near but above the minimum necessary to cause sonic fluid velocity through its perforations.

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