Flue gas silencers

A constant source of noise that has a strong impact on the surrounding area are air and gas ducts, through which noise is emitted from gas turbines, draft machines or associated with combustion processes.

Among power equipment, gas turbine units (GTU) are one of the most powerful sources of constant noise for the environment.

The noise emitted by the exhaust tract of the gas turbine is caused by the combustion process, high velocity of gases passing through the flow part of the turbine and turbulence of the gas flow. Noise emitted at low frequencies is the most difficult to eliminate.

The most effective way to reduce the noise of exhaust gases is to install special devices – flue gas silencers.

Smoke gas silencers are a section (or several sections) consisting of rows of special devices (cassettes) of round or rectangular cross-section equidistant from each other. The sound-absorbing material (SAM) is basalt superfine fiber, which has high sound-absorbing and hygienic properties, which is protected from blowing on both sides by fiberglass (basalt fabric) and perforated sheets or mesh. To reduce the aerodynamic resistance of the silencer, special devices - fairings are installed on the ends of the cassettes.

The principle of operation of the noise suppressor is based on the partial reduction and change in the level of acoustic vibrations due to the passage of the air flow through the sound-absorbing material.

The installation of flue gas silencers allows the sound pressure level to be reduced to sanitary standards established by the relevant regulatory documents.