Gas turbine exhaust silencers, also known as gas turbine mufflers, are specialised components designed to reduce the noise produced by the discharge of hot gases from a gas turbine engine. Gas turbine exhaust silencers work by slowing down and dissipating the flow of hot gases as they exit the engine, which reduces the pressure and sound waves produced by the discharge.

In addition to reducing noise, gas turbine exhaust silencers also work to reduce the back pressure on the gas turbine, which can improve the operation of the engine and reduce the risk of damage or failure, while improving the efficiency and safety of industrial processes.

Controlling noise pollution from gas turbines is a priority for many government and environmental bodies, to ensure that the impact of industrial activities on the surrounding environment is minimised. The bespoke engineered designs that Acran Sound Control manufactures provide optimised attenuation for both inlet and exhaust applications that ensures that the facilities in question meet the relevant design criteria.

Main applications


  • Power stations

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Design features

  • Standard or bespoke design to suit various applications and arrangements
  • Circular or rectangular in design
  • Unique non-welded fixing methods for internal silencer element to accommodate rapid thermal expansion experienced on GT start-up
  • Specialty bagged absorptive materials ‘pillows’
  • Noise reduction capabilities from 10 dB(A) to 50dB(A)
  • Minimal pressure loss to allow maximum GT efficiency
  • Manufacture in a variety of materials including coated steel, stainless steel, and speciality alloys that are capable of handling temperature

Optional extras

  • Acoustically and thermally rated expansion joints manufactured to suit attenuator cases
  • Exhaust stack, designed to accommodate environmental loads
  • Fabrication to AS4100 and AS1554 standards

Completed projects

  • Yurralyi Maya Power Station, WA: 5 x 45MW LM6000, exhaust stacks, exhaust silencers, inlet silencers and flexible joints
  • Parraburdoo Power Station, WA: 1 x 45MW LM6000, exhaust stacks, exhaust silencers, inlet silencers, and flexible joints
  • Senior Thermal, WA: LM2500, exhaust silencers
  • Roma Power Station, Queensland: 2 x 40MW Frame 6, exhaust silencers, exhaust plenums, and exhaust stacks

Engineering process

We design and manufacture bespoke noise control and ventilation solutions for your specific commercial or industrial premises.

Acran Sound Control provides highly specialised expertise and experience, engineering prowess with in-house Australian manufacturing, highly trained installation teams, and bespoke project management.

Our bespoke engineering process:

If your business or project needs to control noise or implement ventilation, we will engineer, manufacture and install a bespoke solution designed just for you.


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