Spinning of air at inlet connection

Ensure spinning of air at fan inlet does not take place

Don't

Don't
  • A poorly designed inlet box can generate spinning of the air which can reduce performance by around 25%.
  • Also, avoid small inlet boxes as they can cause surging.

Do

Image
  • Splitters at the inlet help prevent spinning flow. 
  • Turning vanes, where R/W<1.0 improves uniformity of flow approaching the fan inlet.
  • Inlet boxes should be amply sized.

Propriety information courtesy of FANTECH (Australia) - (NOT TO BE REPRODUCED)
 

TDE

The Multiflow TDE 500 to 710 range consist of fully cased, cylindrical models with circular mounting flanges at both ends and a wired terminal box.

RVF

The Mini Centrifugal Roof Fan series are the new type roof extract units available in 2 sizes and suitable for vertical and horizontal installation. The low noise external motor and high efficient backward bladed impeller meets the requirement of efficient ventilation in residential, commercial and light industrial applications.

Future 150

The Decor Series can be wall or ceiling mounted and is designed to exhaust stale and moist air from bathrooms, toilets, laundries etc. They are also suitable for ventilating all types of small or closed areas.

TD Silent

The Silent Series is a low profile mixed-flow in-line fan that produces low noise when in operation. It does this through a specifically designed perforated internal skin that directs sound waves produced inside the fan to a layer of sound absorbent material.

NEW!! TD-EVO

The low-profile TD-EVO 250 and 315 in-line mixed-flow fans for circular ducts have a unique design where the support bracket allows the motor and impeller assembly to be fitted or removed without dismantling the adjacent ducting.

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