As an example, consider a blow-through system using a pair of axial fans whose outlets are connected to a plenum containing a collection of coils, filters and sound attenuators
. The plenum is 7 ft high by 14 ft wide (2 m high by 4 m wide) and at the desired flow of 150,000 cfm (70 792 L/s) the sum of the total pressure losses from the inlet of the plenum to the system discharge is 8 in.
It is remarkable when you consider that we avoided the use of sound attenuators
at the fans or in the duct." By avoiding the use of the sound attenuators
, the facility realizes greater efficiency from the exhaust system with resulting lower energy usage than systems employing sound suppression.
Multiple fan and filter selections are available, as well as multiple coil face areas per unit size, piping vestibules, blenders/air mixers, sound attenuators
, and manual selections to accommodate special components.
Rather than add asphalt melt sheets and other sound attenuators
to the inner panels of the body-in-white, OEMs program robots to spray consistent coatings of Audio Guard on pre-determined areas of the structure.