Centriflow Fan Flakt

7/26/2019 Centriflow Fan Flakt

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The worlds best plug fan is now even better


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When a high-efciency motor is tted to the most

efcient plug fan impeller, the result can be nothing

less than a new world record in terms of overall

fan/motor efciency.

Only two years ago Flkt Woods Centriow Plus

plug fan broke the records. The revolutionary fan

impeller increased the efciency by 10% compared

to the traditional plug fans and brought efciency

levels close to that of double inlet centrifugal fans.

The new Centriflow Plus EC offers even

better efficiency

The letters EC in the name refer to a highly efcient

motor which is driving the fan. The characteristics

of this ultramodern motor are superior. Comparedto the previous motors, its efciency is much better

and so it naturally enhances the overall efciency of

the fan.

The new Centriow Plus EC improves the world

record previously held by Centriow Plus in regard

to overall fan/motor efciency. The record-brea-

king efciency, on its part, results in astonishingly

low energy consumption and extremely affordable

life cycle costs. Compared to the traditional syn-

chronous AC motors the efciency of the EC motor

remains high over the whole range of operating

speeds.

Smaller and lower sound level with less

vibration

In addition to the higher efciency, EC motors also

have other characteristics valued by the manufactu-

rers of air handling units. The rst thing you noticeis that the EC motor is distinctly smaller than tradi-

tional AC motors making the total length of the fan

considerably shorter. In addition, the benets of the

The new Centriflow Plus EC is a superior combination of th

EC is also suitable for vertical installation

Thanks to the new motor, Centriflow Plus EC functions asreliably in both vertical and horizontal positions. A versi-on is available for both positions. This provides additionaloptions to the designers of air handling units and enables

the design of such equipment to be even more compact interms of size.

What is an EC motor?

The term EC is applied to a DC motor having electroniccommutation achieved with a microprocessor. Commutationmeans applying a current to the motor phases to produce

the best torque at the motors shaft. In brush-type motors,commutation is done electromechanically by using graphi-

te brushes and a commutator. In brushless (EC) motors,however, it is achieved by switching electronics using rotor-position information obtained by HALL sensors. The motorruns on a DC voltage, but with a single phase 230V AC or

three phase 400V AC supply.


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EC motor include a more balanced running and a

reduced motor noise level. The EC motor is control-

led with a separate regulating unit attached to the

motor thus without the need to control motor speed

by frequency inverter.

Functional and tested entity ready to be

used

The Centriow Plus products by Flkt Woods are

known not only for their energy-efciency but also

for their reliable technical values measured speci-

cally for each fan size. The same principle facilita-

ting the customers design work continues with the

EC motors. All technical data is based on individual

measurements.

A competitive entity is made up of the best

components

An air handling unit works as a whole, and its

performance is compared against its competitors by

highlighting certain properties. Efciency, energy

economy and noise levels are at the top of most bu-

yers checklist. When tting your air handling unit

with a Centriow Plus EC fan, you can be sure that

your unit will reach the top levels in all of these

important performance aspects.

Versatile selection program

The best way to ensure optimal and economic

efciency is through a correctly selected fan. Flkt

Woods has several selection programs for designerswhich help you nd the right fan characteristics.

best fan impeller and the best motor

The new motor isa space saver andmakes the entirefan considerablyshorter in length.

Centriflow Plus EC product line consists initially of six fan

sizes, which cover an air flow range of up to 2.2m3/swith maximum pressure rise of 1500 Pa.

Comparing Centriflow Plus EC to Centriflow Plus with atraditional synchronous AC motor and frequency inverter.Fan size 025 and nominal 0,55 kW motor.

General curve chart of Centriflow Plus EC

022

025

028

031

035

040

0,1 0,2 0,5 1 2 m3/s

0,35

0,40

0,45

0,50

0,55

0,60

0,1 0,5 1,0 1,5 2,00,30

CF Plus with a standard ACmotor and frequency inverter

CF Plus EC

Fi

Overall efficiency

Overallefficiency

xz


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The price for energy continues to rise and requirements for lower energy consump-tion tighten in every sector.

International environmental agreements will soon change from guidelines to

laws.

Energy-intensive products will get their own classications as a part of the direc-

tive on Energy-using Products (EuP). It is thus worthwhile to make smart, energy-

efcient solutions even today.

Choosing the right fan is cost-effective and saves energy

Buildings consume approx. 40% of all energy within

the EU area. The share of ventilation covers approxi-

mately one third of the overall energy consumptionin buildings and within

ventilation fans are the single most signicant factor

consuming energy. Therefore, a well-selected, econo-

mical fan in terms of energy use is the main compo-

nent for optimal energy consumption.

Overall efficiency is the deciding factor

The overall efciency is the best indicator of the ener-

gy-efciency of a fan. A useful measure is the Specic

Fan Power SFP. It is the fans electric power from the

mains divided by the fans rated

airow (SFP = PE/qv = kW/

m3/s). SFP is a quantity which

enables a straightforward comparison of fans by different

manufacturers at a given operating point, provided that the

electric power from the mains is calculated in the same way.

When calculating the specic fan power we take the follo-

wing factors into consideration:

Fan efciency at the operating point

Motor efciency, including partial load

Efciency of the speed controller, including the operating

point and its effect on the motor

Our manufacturing process is certified in accordance with ISO 9001and ISO 14001 system standards

Make the smart energy-saving solution already today!

Flkt Woods Oy,Kalevantie 39, FI-20520 Turku, Finlandt+358 20 442 3000 f+358 20 442 3016 wwww.flaktwoods.com

SFP

=PE/qv

=kW/m3/s

The approx. energyconsumption of buildings

in the EU area

Cooling30 %

Ventilation30 %

Heating30 %

Lightingand othertechnicalinstallations

10 %

ENERGY

ECONOMY

ENVIRONMENT

09/2008/88081

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Centriflow Fan Flakt