Where vertical applications are required aerodynamically enhanced acoustic plenums can be provided.
Exhaust fan silencer installation.
Installation dos and donts 3 dr ref qxd 6 11 2015 3 58 pm page 18.
Fantech ld silencers are typically used for kitchen exhaust systems.
Change to an inline fan running parallel to the roof and place a rectangular silencer on the outdoor side.
When attached to an inline or remote fan the ld silencer dramatically reduces the sound traveling through the duct.
Replace windband of fan with silencer.
Duct clampsthe joint between the inline fan and the adjacent filter or duct silencer.
Two silencers can be used together in installations where noise reduction is critical.
An axial fan silencer is available to fit any fan size with construction materials suitable towards a system type a fan size and a higher velocity of a fan type.
Blade passing frequency is often the defining noise characteristic when designing an exhaust silencer.
Direct the duct opening away from noise sensitive areas.
The vibration of the fan amplifies even more at this kind of joints to overcome the issue use a clamp as a joint media in between the fan and filter silencers.
Discharge silencers for industrial fans are often required to accommodate very high volumetric flow rates cfm at high temperatures and velocities.
An excellent way to reduce the amount of noise is to use a fan speed controller.
Noise levels can be high and contain low frequency content.