Exhaust Vent Silencer Design

Abstract

Noise control problems exist where high pressure, high temperature gasses are vented to the atmosphere. An example is used to illustrate an approach to the design of an acoustically treated expansion chamber for a typical noise problem caused by superheated steam vented to the atmosphere. An analysis is developed to aid in the design of the acoustically treated expansion chamber type muffler for broadband frequency application. The algorithm as well as the supporting theory are sufficiently general so as to be applicable to a number of high velocity gas-generated noise conditions. An Appendix of terminology definitions is included.