Suction silencers can be rectangular or cylindrical in construction. The circular silencer is made of concentric annular acoustic cylinder enclosed in a robust steel casing with transition cone or dished end at both ends with inlet and outlet nozzles. The air/ gas enters the silencer and passes through the annular space between the concentric annular acoustic cylinders where the sound energy is absorbed. The straight flow path through annular acoustic cylinder ensures minimum pressure drop. Either steel, galvanized steel or stainless steel is provided for internals based on the customer’s choice.
The suction silencer is used to reduce the suction noise of the compressor/ blower. It is constructed in circular shape.
The fluid passes through the annular space of the acoustic packing where the sound energy is absorbed. The straight flow path through annular acoustic cylinder ensures minimum pressure drop.
The following data are required to design Suction Silencer :
- Flow rate
- Inlet size
- Allowable pressure drop
- Silenced noise level requirements
When air or steam or any other medium is sucked into the compressor, it causes a lot of noise. Suction silencer is a type of vent silencer specifically used to reduce such noise at the suction side of the compressor. Depending on the pressure drop requirement of the customer, design of diffuser and muffler are optimized. Design of a suction silencer is very similar to that of a discharge silencer.