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COMPAC
SPACE VANE AXIAL FAN SYSTEMS
Outlet Regain Attenuator
The outlet regain attenuator
is also computer designed to optimize aerodynamics and acoustics.
The velocity of the air leaving the fan is gradually reduced to
the duct velocity using multiple splitters and/or turning vanes,
thus maximizing the static regain of the axial fan's annular velocity
energy.
The outlet regain attenuator can be supplied in various configurations:
• In-line (axial) flow type with one rectangular outlet.
• Radial type with one, two, or four-sided rectangular outlet(s).
• Multiple level discharges with one or two take-offs at
each level.
Suitable for installation within three feet of the final filters.
End view of an inline
flow type, single discharge outlet regain attenuator with 85,000
cfm capacity. The attenuator dimensions are 6'high x 6'Iong x
12'wide.
Construction: Similar to the inlet flow concentrator silencer.
Details of a 25,000 cfm capacity Compac Space Fan System with
a radial type, one-sided (90° turn) rectangular outlet. The
outlet regain attenuator is suspended from the ceiling. Alternatively,
it can be supported on the inlet flow concentrator silencer.
Optional: Packless
silencers for those applications where fibreglass filling is not
desirable and cleaning is required; for example, biomedical systems
and high temperature applications. Packless silencers use perforated
inside skin of 304 stainless steel construction with single or
multi-layered screens of 304 stainless steel, located immidiately
behind it. M&I's packless silencers have been tested to have
acoustical performance similar to those of fibreglass filled silencers.
Figure 6A outlines the measured transmission
loss of various silencers.
Inlet
Flow Concentrator/Silencer / Compac
Space Vane Axial Fan Systems
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