COMPUTER DESIGNED

The Fluid Kinetics Model CIS Compressor Silencer is an absorptive type silencer, designed for the short acoustic wave lengths produced by centrifugal and axial compressors.
Each silencer is custom engineered, using a computer program developed by Fluid Kinetics. This program enables Fluid Kinetics to match the silencer components to the acoustic and flow characteristics of the system.

CUSTOM ENGINEERED PACKING

Sound is absorbed by viscous drag in the interstices of the glass fiber packing. It is important to match the packing resistance which creates this drag to the characteristic resistance of the gas handled at its operating condition. To adjust the pack resistance, Fluid Kinetics changes packing density, thickness and fiber diameter.

CUSTOM ENGINEERED SLOT WIDTH

A high speed dynamic compressor produces a certain noise signature. The silencer must be engineered specifically to handle this frequency spectrum. In the Fluid Kinetics design, the silencer slot width or distance between the annular packed sections is adjusted for each application.

APPLICATION

The CIS is used to silence the inlet or outlet of high speed dynamic compressors handling gas at any pressure. For lower speed, positive displacement vane and rotary compressors, see the Fluid Kinetics' page describing the RCS silencer .

ACOUSTIC SPECIFICATIONS

The CIS silencer provides 20 to 40 dB attenuation. Fluid Kinetics will supply apecific attenuation performance for each application.

MECHANICAL FEATURES

The CIS internal configuration consists of a series of packed annular cores spaced in accordance with the needs of the application. For pressure applications, these cores are contained in a pressure vessel shell built to ANSI B31.3 piping code. SSME Section VIII Code construction is also available.

The packing also consists of long strand glass fiber which is wound onto the annular cores, providing a continuous blanket effect. Support studs are welded to the facing at regular intervals to act as anchor points for the packing. Layers of fiberglass cloth and stainless steel screen are applied and enclosed with a heavy perforated metal facing. This triple protection assures against loss of packing into the gas stream.

FEATURES

• Provides 20 to 40 dB attenuation

• Packing consists of long strand glass fiber wound onto annular cores, providing a continuous blanket effect

• Heavy, perforated metal facing

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