Experimental Investigation for the effect of Inlet & Outlet Pipe Lengths on Noise Attenuation in a Muffler

Abstract

With the increase use of large industrial machinery (such as huge generators) and the increase in public awareness and concern for noise control the desire to be able to properly design a silencer for specific application is increasing. A test rig is built for a reactive muffler. The object is to minimize the noise level using different pipe lengths for inlet and outlet (discharge) tubes are studied. The major conclusion was that the taller outlets pipe the higher noise attenuation will be obtained.