Pressure recovery

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Experts in Ventilation

Pressure recovery

Look for opportunities for pressure recovery at centrifugal exhaust fan outlets.

Don't

To determine the system resistance the discharge losses have to be added before selecting the fan.
Discharge losses are highest in this arrangement and are equivalent to one velocity head.

Do

With a correctly designed discharge diffuser the pressure recovery in the diffuser will reduce the system total pressure.
Included angle of diffuser to be 15º or less.
Discharge losses reduced by up to 75% in this arrangement.

Look for opportunities for static pressure recovery at axial exhaust fan outlets.

Don't

To determine the system resistance the discharge losses have to be added before selecting the fan.
Discharge losses are highest in this arrangement and are equivalent to one velocity head.

Do

With a correctly designed discharge diffuser the pressure recovery in the diffuser will reduce the system total pressure.
Included angle of diffuser to be 15º or less.
Discharge losses reduced substantially in this arrangement.

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.

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.

TD-Evo

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.