Discharge Silencer

Discharge silencers  and  Intake  Silencers  are  used  to  reduce  the  noise  from  building  openings, equipment enclosures and plenum systems. Any enclosed noise source that requires ventilation may need intake silencers or discharge silencers. Discharge Silencers should be located as close to the blower as possible.

  • Gas turbines
  • Large Electrical  Motors
  • Generators
  • Co-gen engines
  • Fans and blowers
  • HVAC equipment
  • Compressors
  • Engine radiators
  • Cooling towers
  • Test cells

Rotary positive displacement blowers discharge the air in slugs that have been compressed by the line pressure. These slugs can be highly destructive to equipment downstream of the blower. Discharge Silencers are necessary to reduce these pulsations. Discharge Silencers also serve to smooth out the air flow for proper use in the system. Without Discharge Silencers the pulsations can vary anywhere from 40% to 80% of the absolute line pressure. With properly selected and sized Discharge Silencers the fluctuation will be no more than one to two percent of the absolute line pressure.

The intake silencer and discharge silencer solutions developed by the experts at dB Noise Reduction can be integrated to existing systems, or we can design an entire noise reduction package for your new installation.

A large selection of accessories is available to customize your silencer to your application.

  • Weather hoods and cowls
  • Bird and insect screens
  • Matched and drilled flanges
  • Access doors or panels
  • Mounting and support legs
  • Inlet filters

We can also integrate dampers, louvers and inline fans into the silencer design to provide an easily installed, single piece unit.