Intake Silencers

ISEL manufactures silencers for airgas applications. The silencers are designed knowing the application, noise level and noise spectrum.
In order to have the basic data input for design-noise level measurements are carried out under normal load conditions, full load conditions and also with damper closed conditions. The measurements are carried out at number of locations at fan inlet and at distances of 1 or 2 or 3 metres.
The noise contour at number of octave frequency bands are plotted and the Silencer is designed on the following considerations.
- The source noise level at fan inlet under full load conditions shall be brought down nearer to NC80 Curve by suitable combination of acoustic systems.
- The pressure loss across the silencer shall be around 25 mm wcl.