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Sound Attenuators

Sound attenuators are used to prevent transmittance of mechanical or air sourced noise into the conditioned space.

GENERAL

In centralized air conditioning systems, to prevent transmittance of mechanical or air sourced noise into the conditioned space, sound attenuators are used in ducts or in air handling units.  Sound attenuators are custom built to meet the design criteria. 

Attenuators contain splitters of high absorbing capacity.  These splitters are made of galvanized or stainless steel with glass wool or rock wool inside.  The inlet and exit portions of the splitters have a rounded shape to decrease pressure losses and noise.  Splitters are placed vertically inside the attenuator.  Splitters are so sized that the air speed between them does not exceed 20 m/sec.