Centripal Centrif Fans Brochure

Industrial Centrifugal Fans: Centripal EU

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Centripal EU Fans

The Centripal EU range has been designed by Fläkt Solyvent Ventec to become the new European Reference of Centrifugal fans in the Fläkt Woods Group. The latest innovations are reflecting the 90 years of experience of Fläkt Solyvent Ventec, strongly recognised on the market for its high performance characteristics, reaching up to 88% efficiency with airfoil blades. The development of the range has enabled a high level of standardisation integrating all ancillaries and fittings, enabling fans to be delivered in short lead times, with a maximum of flexibility.

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Summary General presentation Fan and applications ................................................................................................................................................................................................................... 4 Key features of a centrifugal fan .................................................................................................................................................................................. 6 The different impeller types ............................................................................................................................................................................................... 8 ATEX norm and related fan types ......................................................................................................................................................................... 10

Small sizes concept: The range ........................................................................................................................................................................................................................................... 14 Fans for clean air applications Medium pressures .................................................................................................................................................................................................................. 16 High pressures ............................................................................................................................................................................................................................ 18 Fans for dust-laden air applications Medium pressures .................................................................................................................................................................................................................. 20 High pressures ............................................................................................................................................................................................................................ 24 Fans for heavily dust-laden air applications Medium and high pressures ........................................................................................................................................................................................ 26

Large sizes concept: The range ........................................................................................................................................................................................................................................... 32 Fans for clean air applications .............................................................................................................................................................. 34 Fans for dust-laden air applications ............................................................................................................................................ 36

System design recommendations ..................................................................................................................................................... 38 Ancillaries .................................................................................................................................................................................................................................... 40 Solyvent in the Fläkt Woods Group .............................................................................................................................................. 42

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Centripal EU: a modular concept built around A design made and adapted DE-DUSTING Pressurised or depressurised kilns, fans working as blowers or in exhaust mode.

GENERAL VENTILATION - FUME EXTRACT Extractors in workshops, fresh air make up and supply, fans for filtering systems, clean rooms…

PROCESS FANS IN PAINT BOOTHS Fans with removable impeller design, re-circulating fans for furnaces, exhausters in spray booths…

FANS FOR GLASS INDUSTRY Fans for ovens, glass mould cooling, furnace wall cooling, glass annealing, blowers in the cooling process.

CHEMICALS - GAS EXPLOSION PROOF DESIGN FOR HAZARDOUS AREAS

Blowers, exhausters, certified fan design, category 2 & 3, suitable for Zones 1 & 2 of the

directive.

AGRICULTURE - DUST EXPLOSION PROOF DESIGN FOR SILO APPLICATIONS Certified fan design, category 2 & 3 for dusty environment Zone 21 & 22 of the directive.

FURNACE BURNER AIR SUPPLY Introduction of fresh air through a high pressure blower.

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highest aerodynamic performance for nearly all industrial applications TEXTILE MACHINERIES Blowers, exhausters and re-circulating fans for the complete production process.

WOOD AND PAPER INDUSTRIES Blowers/exhausters for kilns in de-dusting, dryers for paper or wood production processes.

FOOD INDUSTRY Coolers, dryers, water evaporation (pasta, milk…)

MARINE - OFFSHORE Exhausters, blowers, motor cooling, engine room air circulation...

FANS FOR ORIGINAL EQUIPMENT MANUFACTURERS (OEM’S) Machines for packing, plastic films, DC motor cooling, generator cooling, sweepers, …

IMPELLERS AND INLET CONES OEM’s for filtering systems, air treatment, re-circulation systems, car wash, industrial vacuum…

TRACTION Fans for trains, buses: cooling blowers for traction motors, braking resistors, converters, transformers…

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5 typical features determining a centrifugal fan: 1 • Arrangement types ISO 13349: 1999 Description

1

Single width impeller. Belt Driven Arrangement. Overhung impeller fitted onto an intermediate shaft, supported by 2 bearings mounted on a Support.

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Single width impeller. Direct Driven Arrangement. Overhung impeller directly fitted on motor shaft. No bearings on the fan. Motor is fixed on a Support.

5

Single width impeller. Direct Driven Arrangement. Overhung impeller directly fitted on motor shaft. No bearings on the fan. Flanged motor fixed on a fan casing.

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Double width impeller. Belt driven arrangement Impeller mounted between bearings. Available on demand

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Single width impeller. Semi-flexible Coupling Arrangement. As arrangement 1 + one motor support in the same axis.

2 • Orientations Fourteen standard orientations are available as per the diagrams. The orientations are viewed from the drive side (side opposite to the fan inlet) and are given according to the Eurovent standard.

RD 0°

RD 45°

RD 90°

RD 135°

RD 180°

RD 270°

RD 315°

LG 0°

LG 45°

LG 90°

LG 135°

LG 180°

LG 270°

LG 315°

3 • The sizes 15 standard impeller diameters from 315 up to 1600 mm according to the R20 series.

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4 • Aerodynamics – 6 blade types, depending on air transported (see page 8 - 9): D, B, P, L, S, T. – 11 performance envelopes, corresponding to impeller width (L, M, K, H, N, P, R, S, T, V, W). (Small sizes). – 8 performance envelopes, corresponding to impeller width (9, 7, 6, 4, 3, 2, 1, 0). (Large sizes).

Small sizes : Large sizes :

L ........................................................................................... P .......................................................................................... W 9 .......................................................................................... 3 ........................................................................................... 0

5 • Material type and coatings • Carbon steel or Stainless steel (304L, 316L, 316Ti...) • Standard coating, epoxy, galvanized steel, zinc spray...

Centripal EU

4

L

D

560

RD

45

Adx

Std

Fan series

Drive Arrangement 4-5: direct 1: belt 8: coupling

Impeller width L➠W 9➠0

Type of blades (D - B P-L S - T)

Impeller diameter (mm)

Rotation

Discharge direction

Material Adx: F24.2 steel, AISI 304 L: stainless steel...

Coatings: - Std : standard RAL 7035 (powder) - Epoxy 120 µm anti-corrosion - Galva HDG after manufacture - Finit RAL customer imposed colour

RD = (Right) LG = (Left)

From the 1st January 2001, ISO 12499 "Industrial fans - Mechanical fan safety - Protection", the installer and end user are directed as folows: "If the fans rotating parts become accessible during service, the power supply must be completely isolated. In those circumstances, a power supply isolation unit must be placed next to the fan to enable as positive isolation of the unit during maintenance.

To conform to this international standard, all fans must be installed with a local isolating switch.

A large choice of electrical equipment, whatever your starting (method), to make you life easier: - Pre-wired electrical control panels (Star, Star Delta, double speed ...). - Pre-wired frequency inverters for fan performance control. - Safety switch (standard or explosion proof).

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Basic Fan selection information ? High fan efficiencies, low sound power levels, high performance, small surface area and long life are obtained from the fans design and selection according to the given criteria.

Fan selection is derived from: • the nature of the air to be moved and fan environmental conditions. • design requirements (volume, pressure...). • drive arrangement and discharge direction, available space, accessories and options...

6 different types of impellers for all applications: D, B, P, L, S, T.

Dust-laden

Clean air

D-blade

B-blade

P-blade

(airfoil).

(backward curved).

(flat, backward inclined).

Suitable for handling clean air with relative humidity levels not exceeding 80 %.

Suitable for handling clean air with relative humidity levels not exceeding 80 %.

Suitable for handling humid or fairly dusty air.

High efficiencies of up to 88 % and particularly low sound power levels.

High efficiencies of up to 85 % and particularly low sound power levels.

Suitable for L, M, (and 9 - 7 - 6 - 4 for sizes > 1000).

Suitable for H, N, P, R, S, T, V, W widths, and

Efficiencies of up to 87 % with low sound power levels.

9- 7 - 6 - 4 - 3 - 2 - 1 - 0 for sizes > 1000.

Standards The recently developed, EU range of centrifugal fans is based on the latest European and international standards.

Aerodynamic and acoustic performance research and tests Performed according to ISO 5801 and ISO 13347. The above research and tests have contributed to the very high efficiencies and exceptionally low sound power levels regardless of operating conditions:

Tolerances of ISO 13348 - AN 3 level • Guaranted air volume and pressure : ± 5 % • Guaranted total sound power levels : + 0 dB / + 4 dB

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Mechanical and vibration tests Our Computerized finite Element Analysis has allowed to eliminate all the natural frequencies within the working speed ranges. Guaranteed vibration levels (following ISO 14694 BV3) :

4,5 mm/s: rigid assembly. 6,3 mm/s: on AV mounts.

air

Heavily dust-laden air Air très poussiéreux

L-blade

S-blade

T-blade

(flat, slightly backward inclined).

(shrouded paddle blade).

(unshrouded paddle blade).

Suitable for handling air laden with abrasive or slightly clogging dust.

Recommended for handling air laden with powdery, abrasive and clogging dust.

Recommended for fibre-laden air.

Efficiencies of up to 77 % with relatively low sound power levels.

Efficiencies of up to 70 %.

This blade type resist damage due to fan surge at low air volume.

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Centripal Ex: a complete

certified range

Some useful information about directive 94/9/EC: Applicable since July 1st 2003. All new installations have to conform to this new regulation. All existing installations have to be analysed and risk assessed using this new code by the end of June 2006. This European directive is applicable on all electrical equipments, and rotating machineries which are installed in an hazardous area.

3DL range certified by a notified body Certificat number: LCIE 06 ATEX 6101X

It is responsibility of the end user and his installer to define precisely the zone in which the fan is going to run. Zone can be different inside and outside the fan. Category of machinery has to correspond to the more dangerous zone.

Conform to the EN 14986 standard

Correspondence between fan categories and

zones:

Fan category

Corresponding zone

1G category 2G category 3G category 1D category 2D category 3D category

Zone 0 Zone 1 Zone 2 Zone 20 Zone 21 Zone 22

G = GAS , D = DUST.

For categories 2G, 2D, 3G and 3D corresponding to zones 1, 2, 21 and 22, our technical file number

is:

ST M 07 TEC 2885

Additional elements of manufacturers file, following the directive: Additional name plate: And include: . • Certificates of conformity • Balancing certificate. • Tightness certificate for a ducted/ducted configuration. • Vibration test report. • Over-speed test report. • Storage instructions. • Starting and maintenance manuel.

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Centripal Ex: special features of an

Fan

Some other construction details imposed by the directive for steel impellers for example are: • Fully welded construction above 11 kW. • Carbon shaft: carbon has the ability to be worn is on first start up without burning, as the seal is perfectly adjusted to the motor shaft. This means that there is no risk of ignition during start up. • Anti-spark linings in brass protecting all rotating parts: cooling disk, pulleys, shafts, hubs… • Brass or copper inlet cones for a maximum safety, combined with a minimum distance between rotating and static parts. • All bolted parts are also linked to each other via a stainless steel earthing system. certified: motors, temperature detectors, • All electrical equipment has to be vibration monitoring (compulsory for 2D zones)... • Pulleys to be balanced, belts to be made in an anti-static material.

motor choice Dust environments:

Gas environment:

Motors are certified zone 21 or 22. Depending if dust is conductive or not, protection mode is going to be IP 6X or 5X (generally IP 65 or IP 55).

If danger is unlikely to happen, likely to happen or permanent, motor can be of a spark-proof design, explosion proof design, or prohibited.

Motor choice in a dust environment:

Motor choice in a gas environment:

Azardous area

Danger zone

Protection level of equipment

Motor category

Protection mode

Azardous area

Danger zone

Protection level of equipment

Motor category

Protection mode

Continous danger

20

Very high

1D

Prohibited

Permanent danger

0

Very high

1G

Likely to happen

CEI EN 50284

21

High

2D

IP 6X

Unlikely to happen

22 Conductive dust

Normal

3D

IP 6X

Likely to happen

1

High

2G

EEx-d EEx-de EEx-e

Unlikely to happen

22 Non conductive dust

Normal

3D

IP 5X

Unlikely to happen

2

Normal

3G

EEx-nA

For the gas environments, additional data to be considered is surface temperature of the motor itself, depending on a gas transported or ambiant: Group

T1 450 °C

T2 300 °C

T3 200 °C

T4 135 °C

T5 100 °C

T6 85 °C

I

Methan (mines)

-

-

-

-

-

IIA

Aceton, Acetic Acid, Ammoniac, Methan,Methanol, Propane,Toluene

Butane, Ethyl alcohol

Cyclohexane, Kerosen, THF

Acetaldehyde

-

-

IIB

Koke gas, Water gas

Ethylene

Hydrogen Sulphide

Ethyl ether

-

-

IIC

Hydrogen

Acetylene

-

-

-

Nitrate ethyl

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Centripal EU Small sizes • Drive Arrangements 1 - 4 - 5 • Pre - selection charts

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Centripal EU small sizes: an innovative range, Arrangement 5: the most compact désign A modular concept from 250 to 710 mm

4 possibilities for installation:

Product features:

• Fixation on the inlet flange.

• From 250 up to 710 mm impeller Diameter.

• Fixation on the outlet flange.

• Flow rates up to 5,5 m3/s.

• Fixation with 2 feet on the floor.

• Pressures up to 7000 Pa.

• Fixation on AV mounts' kit.

• Small surface area. • Frequency converter speed control possible. • Gas temperatures between -20 °C to + 60 °C. • All impeller types available.

Applications : de dusting, OEM (cooling, drying…).

Arrangement 4: a complete and cost effective range

Orientable construction One casing to suit all arrangements: 14 different orientations available in 45° increments thanks to the octogonal casing design. Flexibility of the units for on-site modifications is achieved allowing the casing or motor size to be changed.

Easy for maintenance The bolted motor support enables the impeller to be easily removed from the casing for ease of cleaning and maintenance. Due to the design, stainless steel fan configurations can be made with stainless steel for all gas contact parts and mild steel for the motor support, thereby reducing the overal cost.

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modular and compact, from 250 up to 900 mm (extension to 1250 mm for L and M) Overhung impeller fitted directly on motor shaft: -

Small surface area Reduced power requirements Simplified maintenance: no belts, no bearings. Standard fans can be adapted for temperature ranges of –20 °C up to +200 °C.

The advantages are: Wide openings in the motor pedestal enable easy access for cabling. Inlet and outlet flanges according to ISO 13351. Sufficient space on the motor pedestal allows the fitting of a safety switch. The large access door enables easy and efficient inspection of the impeller.

Arrangement 1: made for high temperatures and high rotation speeds Overhung impeller fitted onto an intermediate shaft supported by two bearings and equipped with a V-belt type drive. • Fan capacities fully site-adjustable, • High fan speeds, • High temperature applications, • Special shaft seal, Standard fans can be used at temperatures from -20 °C to +350 °C.

A very compact design.

Balt maintenance and the adjustment of tension is easily facilitated thanks to a fully adjustable support.

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Centripal EU small sizes - Clean air applications Medium pressures

Features Centripal EU fans for clean air applications: D- type hollow airfoil blades. These are available in 2 impeller widths (L, M). High efficiency levels are obtained with D-type impellers: • aerofoil, i.e.,aerodynamically shaped blades matching the inlet cone, reduce shocks produced at wheel entry, resulting in smooth air flow across the blade surface and eliminating eddy currents producing turbulence and noise. • Low absorbed powers, high fan efficiencies and low sound power levels.

Typical applications • General ventilation. • Boilers and furnaces. • Heat treatment. • Dehumidification. • Smoke exhaust systems. • Air conditioning.

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Fan pre-selection chart - Direct drive The pre-selection chart below should be used to determine which drive arrangement best meets design requirements: • 50Hz direct drive fans at 2,900 or 1,450 rpm, 950 rpm.

∆ total pressure (Pa)

CENTRIPAL EU 4 - MD/LD - 2, 4 and 6 poles.

Arr. 4

7000 MD 630 2p

6000 MD 560 2p

5000 4500

LD 5

MD 50 0

4000

60 2

2p

LD 5

p

00 2

3500

MD 450

50 2p

3000 M D 400

2500 2000

LD

355

2p

2p

p

8 MD

00 4 p

4p

4 550 LD p

4 500 LD

4 LD

p

4p 50

200

p

p

4p 630 LD

04

p

10 4

04

LD 7

p

56

50

500 400

800

04

LD

63

MD

MD

750

LD 9

4p 10

MD

1000

p 06 125 LD

4p 00

7 MD

LD 315 2p

MD 315 2p

1500

LD 40 0

04 90 MD

MD 355 2p

2p

p

LD 4

2p

100 0,2

0,3

1

0,4 0,5

2

3

4

5

6

7

8

15

9 10

20

30

40

50

Volume (m3/s)

Fan pre-selection chart - Belt drive Arr. 1

8000 7000 6000

5000

315

355

400

500

315

355

560

630

710

1250

MD

4500 4000 3500 3000 2500 2000 400

450

500

560

630

710

800

900

1000 1250

LD

1500

1000 750 500 400 300 CENT_EU1-MD-LD

∆ total pressure (Pa)

CENTRIPAL Eu 1 - MD/LD

200 100

0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

9

10

15

20

24

30

40

Volume (m3/s)

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Centripal EU small sizes - Clean air applications High pressures

Features Centripal EU high pressure - clean air fans feature B-type curved blades and are available in 8 impeller widths (H, N, P, R, S, T, V and W). • Combinations of design features ensures fans precisely match design requirements. • Centripal EU equipped with B-type impellers are best suited for low and very low air volume requirements.

Typical applications • Furnace burner air supply. • Fluidization. • Pneumatic conveying. • Glass annealing. • Diesel engine booster. • Air curtains. • Glass mould cooling, heating boiler optical cell cooling, etc. • Pulsators in waste water treatment plants.

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Fan pre-selection chart - Direct drive, 2 and 4-pole motors The pre-selection chart below should be used to determine which drive arrangement best meets design requirements: • 50Hz direct drive fans at 2,900 rpm Arr. 4

18000 17000

∆ total pressure (Pa)

∆ total pressure (Pa)

CENTRIPAL EU 4 - H, N, P, R, S, T, V, W.

TB

16000

1000

15000

RB

14000

900

13000

900

12000 11000

800 710

14000

1000 SB 900

13000 12000

900

900

PB

NB

900

800 800

800

800 8000

710

710

710

710

7000

6000

630

630

630

560

560

4000

5000

500

560 500 500

450

500

450

450

450 400

2000

400 355

355

315 355

400

400 355

355

315

315 CENT_EU4_2P-2

1000 CENT_EU4_2P-1

1000

450

450

400 2000

500 500

3000 450

450

560

560

4000

500 3000

560

560

560

500

630

630

630

5000

HB

710 710

7000

630

630

15000

9000

710

6000

VB 1000

10000

800

9000 8000

WB

16000

11000

800

10000

18000 17000

0

0,05 0,1

0,2

0,3 0,4 0,5 0,6 0,8 1

2

3 6

0

8

0,05 0,1

0,2

0,3 0,4 0,5 0,6 0,8 1

2

Volume (m3/s)

3

6

10

3

Volume (m3/s)

Fan pre-selection chart - Belt drive Arr. 1

∆ total pressure (Pa)

20000 18000 16000 RB

15000 14000

630 800

13000

NB

12000

560

450

11000

500

10000 9000

560

SB

400

4000

3000

3000

2000

2000

1000

1000

630 560

450

500 450

400

500 450

800 630 560

800 HB

400 400

355

4000

PB

560 500

6000 5000

900

630

7000

5000

800

710

8000

355

6000

15000 14000

9000 500

7000

16000

10000

450

400

18000

12000 11000

630

8000

20000

13000

800

355

355

500

0

0,05 0,1

0,2

0,3 0,4 0,5 0,6 0,8 1

2

3 6

8

3

Volume (m3/s)

CENT_EU1-S-P-H

355

CENT_EU1-R-N

∆ total pressure (Pa)

CENTRIPAL EU 1 - H, N, P, R, S.

500

0

0,05 0,1

0,2

0,3 0,4 0,5 0,6 0,8 1

1,5 2

3 6 8

12

18 3

Volume (m3/s)

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Centripal EU small sizes - Dust-laden air applications Medium pressures

Features Centripal EU fans for dust-laden air applications. Backward inclined blades (P and L). These are available in 2 impeller widths (L, M). Centrifugal force and blade inclination combine to “peel off” dust, significantly reducing particle build-up on the impeller. The P type impeller with its sharply inclined blades is most suitable for slightly dust-laden, non-clogging air applications. Slightly inclined, the L-blade impeller is designed for handling slightly clogging, particle-laden abrasive air and corrosive gases.

Typical applications • Furnace burner supply air. • Dust separators. • Coating machine dedusting. • Dusty (cement factories, steel mills) or humid (paper mills, dyeing) environment ventilation systems.

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Fan pre-selection chart - Direct drive The two pre-selection charts below should be used to determine witch drive arrangement best meets design requirements: • 50Hz direct drive fans at 2,900 1,450 or 950 rpm. Arr. 4

∆ total pressure (Pa)

CENTRIPAL EU 4 - ML/LL. 8000 7000

6000

ML 56

0 2p

5000 ML

4500

500

2p

LL 560 2p

4000 ML 45

3500

LL 500 2p

0 2p

3000

ML 40

0 2p

LL 450 2p

2500

ML

ML 355 LL 400 2p 2p

2000

90 04 p

p 04 80 ML

50

p

6P

04

4p 630 LL

4p LL 800

p 04 71 LL

4p

p 60 4 LL 5

p

4p

200

4p

50

00 4

LL 5

400

60 4p

4 p LL 04 50 ML

500

630

ML 5

750

12

90

0 71

ML

1000

LL

LL

L M

LL 355 2p LL 3 15 2 p ML 315 2p

1500

100 0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

10

15

20

30

∆ total pressure (Pa)

CENTRIPAL EU 4 - MP/LP.

40 50 Volume (m3/s) Arr. 4

7000 MP 630 2p

6000

5000

MP 560 2p

4500 4000 MP 5

3500 3000

00 2p LP 450

MP 450 2p

2500

2p

LP 4 00 2 p

MP 400 2p

2p

LP 3 55 2 p

900

MP 35 5

MP

2000

4p

800

MP 31 5

MP

1500 2p

4p

MP 710

1000

4p

750

LP 9 0 0 4p

LP 800 4p

0 4p

560

4p

4p

0 4p

LP 630

LP

0 4p

LP 71

MP 63

MP 56

p

4p 500 LP 0 4p

50 4

200

MP 50

400

LP 4

LP 315 2p

500

100 0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

10

15

20

30

40 50 Volume (m3/s)

21

Centripal EU small sizes - Dust-laden air applications

Fan pre-selection chart - Belt Drive Arr. 1

∆ total pressure (Pa)

CENTRIPAL EU 1 - ML/LL.

Volume (m3/s)

22

Fan pre-selection chart - Belt Drive Arr. 1

CENTRIPAL EU 1 - MP/LP.

Volume (m3/s)

23

Centripal EU small sizes - Dust-laden air applications High pressures

Features Centripal EU fans for dust-laden air handling feature L-type flat blades and are available in 4 impeller widths (H, N, R and S). • Centrifugal force and blade inclination combine to "peel off" dust, significantly reducing clogging hazards. • The L-blade is highly suitable for slightly clogging, dust-laden air and corrosive gases.

Typical applications • Dedusting. • Chemical degassing. • Plant recycling (cement factories). • Powder and granulated product pneumatic conveying. • Waste incinerators. • Sweepers.

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Fan pre-selection chart - Direct drive The pre-selection chart below should be used to determine which drive arrangement best meets design requirements: • 50Hz direct drive fans at 2,900 rpm

Arr. 4

∆ total pressure (Pa)

CENTRIPAL EU 4 - SL/RL/NL/HL. 16000 RL

15000

SL

900

14000 900 13000 12000 800

11000

NL

800

800

10000 9000

710

710

710

8000

HL 710

530

7000 530

530

530

6000 560

560

5000 4000 450 400

400 2000

560

500

500

3000

560 500

450

500

450

450

400

400

355 355

355

355 315

315

CENT_EU4_2P-3

1000

0

0,05

0,1

0,2

0,3

0,4

0,5

0,6

0,8

1

2

5

9 Volume (m3/s)

Fan pre-selection chart - Belt Drive Arr. 1

16000 RL

15000

800

630

14000 13000

800

NL

630

SL 630

12000

560 560

450 11000

450 450

10000

HL

9000 400 8000

400

400 800

7000 355

355

630

355

6000

560

5000

450 400

4000 355

3000

2000

1000

CENT_EU1-SL-RL-NL-HL

∆ total pressure (Pa)

CENTRIPAL EU 1 - SL/RL/NL/HL.

0

0,05

0,1

0,2

0,3

0,4

0,5

0,6

0,8

1

1,5

2

3

4 6 9 Volume (m3/s)

25

Centripal EU small sizes - Heavily dust-laden air Medium and high pressures

Features Centripal EU fans for handling heavily dust-laden air can be selected with either shrouded (S-blade) and un-shrouded (T-blade) paddle blades. Fans are available in 3 impeller widths (M-H-R). This type of impeller is ideally suited for: • powder and pellet-conveying applications when selected with S-blades. • fibre, shavings and paper-conveying when selected with T-blades.

Typical applications • Dedusting of wood-working machines. • Dust separators. • Pneumatic conveying on carding and combing machines.

26

Fan pre-selection chart - Direct drive, 2 and 4-pole motors The pre-selection chart below should be used to determine which drive arrangements best meets design requirements: • 50Hz direct drive fans at 2,900 or 1,450 rpm. Arr. 4

∆ total pressure (Pa)

CENTRIPAL EU 4 - MS/MT 7000 MS 560 2p

6000

MS 5

00 2

5000

p

4500 4000

MS 450 2p

3500 3000

MS 40 0

2p

MT 450 2p

2500

MS 355 2p

0

800

71

MT

S 4p

M

1000

63

4p

S

MT p

4p

p

0

04

04

71

63

56

S

MT

50 0

400

4p

MT

S

M

500

0

M

750

00 4p

M

MT 315 2p

p 04 80

MT 355 2p

MS 9

MS

MS 315 2p

1500

MT 400 2p

p 04 90 MT

2000

560

4p

T

4p

M 0

50 4p

200 100 0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

10

15

20

30

40 50 Volume (m3/s) Arr. 4

∆ total pressure (Pa)

CENTRIPAL EU 4 - RT/HS/HT - 2900 rpm. 12000 11000

RT 800 10000 9000

RT 710

8000

HT 710

7000

HT 6

RT 630

30

6000

30 HS 6

RT 560

5000

HT 560

HS

RT 500

4000

0 50 HS

RT 450

3000

560

HT 500

HT 450

H S 45 0

HT 400

2000

HS

HT 355

0 40

HS 5 35

1000

500 0

0,05

0,1

0,2

0,3

0,4

0,5

0,6

0,8

1

1,5

2

3

4

6

8

Volume (m3/s)

27

Centripal EU small sizes - Heavily dust-laden air

Fan pre-selection chart - Belt Drive CENTRIPAL Eu 1 - HS/MS.

∆ total pressure (Pa)

Arr. 1

12000 10000

HS

9000

630

450

800

8000 400

7000

355

6000

5000 4500 4000 3500 3000 2500 2000 315

355

400

450

500

560

630

710

800

900

MS

1500

1000

CENT_EU1-HS-MS

750

500 400 300 0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

9

10

15

20

Volume (m3/s)

28

Fan pre-selection chart - Belt Drive CENTRIPAL Eu 1 - RT/HT/MT. Arr. 1

450

10000 9000

630

710

HT

900

800

800

8000 400

450

500

7000 355 6000

5000 4500 4000 3500 315

355

400

450

500

560

710

630

900

MT

3000 2500 2000 800 1500

1000

750

CENT_EU1-RT-HT-MT

∆ total pressure (Pa)

RT 12000

500 400 300 0

0,1

0,2

0,3

0,5

1

2

3

4

5

6

7

8

9

10

15

20

Volume (m3/s)

29

30

Centripal EU Large sizes • Drive arrangement 1 - 4 - 8 • Pre - selection charts

31

Centripal EU large sizes: a complete range in three Arrangement 4: the cost effective solution from 1000 up to 1400 mm diameter

Fans in direct driven arrangement, from 1000 mm to 1400 mm are covering a wide range of aerodynamic working curves. Frequency converter option, enables a better comfort in use. For all applications from -20 °C to +200 °C.

Arrangement 1: a fully standardized range from 900 to 1400 mm diameter

Totaly adapted to high fan speeds, high temperatures applications or special shaft seal. Fan capacities fully site - adjustable standard fans can be used at temperatures from -20 °C to +350 °C.

32

arrangements to cover all industrial process needs Arrangement 8: coupling driven arrangement from 900 to 1600 mm diameter The arrangement 8 is dedicated to applications where cycles (change of speed), high temperatures (up to +350 °C) and high motor power are key features for the fan. Coupling is particularly suitable for frequency drive.

Optional equipment:

• Inlet guide vane: For adjustment of fan performance on site, or for air flow regulation at constant speed.

• Oil bearings: This option is available on simple demand. For high rotation speeds, oil bearings are bringing more comfort in lubrication maintenance.

• Rotation detectors: Mainly for arrangement 1; allows to check that the fan runs properly.

• PT 100 : To check temperature elevation of bearings

• Vibration monitoring: Useful in dusty environments, to monitor clogging and balancing of the impeller.

33

Centripal EU large sizes - Clean air applications

Features Centripal EU fans for clean air applications: B or D- type hollow airfoil blades. High efficiency levels are obtained: • airfoil, i.e.,aerodynamically shaped blades matching the inlet cone, reduce shocks produced at wheel entry, resulting in smooth air flow across the blade surface and eliminating eddy currents producing turbulence and noise. • Low absorbed powers, high fan efficiencies and low sound power levels. • B-type for highen pressure levels an narrow impellers.

Typical applications • Dedusters after filtration systems. • Cooling (glass...). • Industrial boilers. • Smoke exhaust systems.

Fan pre - selection chart - Direct drive Arr. 4

∆ total pressure (Pa)

CENTRIPAL Eu 4 - Widths 9 - 7 - 6 - 4, D blades (Curves at maximum speed) 15000 14000

4D 100 0

13000 12000 11000

4D

11 20

6D 12 50

10000

6D

4D

112

8000

6D

10

00

7000

50 12

0

9000

7D

6000

11 20

5000

7D

4000

12 50

7D 100

3000

0 9D 9D 00 14

12

0

50

00 10

9D

2 11

9D

2000

CENT_EU4_GT_01

1000 500

0

5

10

15

20

25

30

35

40

45

50

55

60 3

Volume (m3/s)

34

Pre - selection chart - Belt drive

Arr. 1

25000 20000

3B

0

50 12

2 11

00

16000

3B

18000

0 100 3B

00 10 2B 900 2B

20000 1B 9

15000 14000

4D 112 0 4D

0

12

2 11

2B

2B

∆ total pressure (Pa)

CENTRIPAL Eu 1 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, D and B blades (Curves at maximum speed)

50

13000

100

0

12000 11000

4D 1

6D 1 120

6D 1

250

250

10000

6D

000

7000

0 112 1B

1B 1

8000

1 00

00 3B 9

9000

0 7D

10

7D 00

112 0

7D 1 250

6000 4D 0 90

5000 2 1B 1

4000

50

3000 11 20

2000 9D

9D

10

00

9D

12 50

CENT_EU4_GT_02

9D

14

00

1000 0

5

10

15

20

25

30

35

40

45

50

55

60

Volume (m3/s)

Pre - selection chart - Coupling drive

Arr. 8

25000 20000 0

3D

12

3D

50

16 00

2 11

900

3D

3D

90

0

50 12

16000

16

00

2B

18000

2B

2B

20000

50 12 1B

0B 1000

4D 1 120 3D 140 0 4D 100 0

15000 14000

3D

13000

100 0

10000

14

00

12

4D

14 00

00 16

50

7D 125 0

7D

11 2

0

6D 00 10

00

600 1B 1

6D 9

1B 1120

4000

2B 1000

0B 1120 0B 900

5000

00

4D 900

1B 1000

6000

6 1B 900 0B 1

0 0B 1 40 0B 1250

7000

4D

4D

7D 100 0

9000 8000

6D 1 120

6D 1250

0

2B

112

00 14

2B

1B

12000 11000

6D

9D 1 000

14 0

0

3000 9D

2000

11 2

0

9D

12

50

9D

14

00

1000 0

5

10

15

20

25

30

35

40

45

50

CENT_EU4_GT_03

∆ total pressure (Pa)

CENTRIPAL Eu 8 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1 - 0, D and B blades (Curves at maximum speed)

55 60 Volume (m3/s)

35

Centripal EU large sizes - Dust-laden air applications

Features Centripal EU fans for dust-laden air applications. Backward inclined blades L. Centrifugal force and blade inclination combine to “peel off” dust, significantly reducing particle build-up on the impeller. Slightly inclined, the L-blade impeller is designed for handling slightly clogging, particle-laden abrasive air and corrosive gases.

Typical applications • Furnace burner supply air. • Dust separators. • Coating machine dedusting. • Dusty (cement factories, steel mills) or humid (paper mills, dyeing) environment ventilation systems.

Fan pre - selection chart - Direct drive

Arr. 4

∆ total pressure (Pa)

CENTRIPAL Eu 4 - Widths 9 - 7 - 6 - 4, L blades (Curves at maximum speed) 16000

4L 12

50

15000 14000

4L

100

0

4L 11

13000

20

12000 11000 10000

6L 1 120

9000

6L

8000

100

0

7L

7000

7L

6000

7L 1 250

100

112 0

0

5000 4000

9L 1

00 0

9L 1250

9L

11 2

6L

0

3000

12

50

2000 9L

14 00

CENT_EU4_GT_04

1000 500

0

5

10

15

20

25

30

35

40

45

50

55

60

Volume (m3/s)

36

Pre - selection chart - Belt drive

Arr. 1

CENTRIPAL Eu 1 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, L blades (Curves at maximum speed) 00 10

0 90 3L 00 10 2L 20 11 20 50 11 12 1L 2L 2L 0 90 2L 0 90 1L

1L

20000

1L

16000 15000 14000

11 2

3L

125

0

0

0 00

18000

3L

1 3L

∆ total pressure (Pa)

27000 25000 20000

12 50

4 L 125 0

13000 12000 11000 4L 9 00

10000

4L

4L 1 000

112 0

6 L 11 20 6 L 10 00

9000 8000

7L

7000

7 L 12 50

100 0

6000

6L

125

0

7L 1 1 20

5000 9 L 11 20

9L 1250 9L 1000

4000 3000

9L

140

CENT_EU4_GT_05

2000

0

1000 0

5

10

15

20

25

30

35

40

45 Volume (m3/s)

Pre - selection chart - Coupling drive

Arr. 8

3L

0

0

2L

140

14

0

00 6 L 11 20

6L

10 00

3L

4L

16

14

16 00

00

10 00

125 0

9L 1250

6000

4L

50

6L 7L

0

7000

12

00

40

8000

1 1L

6L 9 00

4L

20 11

4L 9 00

3L 900

10000

125 0

4L

12 50 7L

9000

125

0

1L

12000 11000

0

2 11 2L

13000

0

3L

4 L 10 00

15000 14000

3L

160

112 0

25

0

60

10 00

1 2L

1 1L

16000

2L

00

3L

20 11 1L 0 90 1L

18000

00

00 10

20000

1 2L

9 2L

25000 20000 1L

6L

140

0

9 L 11 20

5000 4000

9L

2 11

10

7L

9L

00

0

3000

14 00

2000

CENT_EU4_GT_06

∆ total pressure (Pa)

CENTRIPAL Eu 8 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, L blades (Curves at maximum speed) 27000

1000 0

5

10

15

20

25

30

35

40

45

50

55

60

Volume (m3/s)

37

System design recommendations Design considerations Our fan performance curves are based on tests performed with optimum installation conditions. The inlet ducts were circular and were connected in a true alignment to the fan inlets with our standard aerodynamic inlet cones fitted. and a discharge duct equipped with an outlet extension connected to a straight measuring duct. Friction loss (system pressure) data is usually

available from the duct system manufacturer’s catalogues.

air intake to the fan will have an affect on the fan performance

Published data is based on uniform air intake at the fan inlet.

• A particular ductwork component located too close to either the fan inlet or outlet will adversely affect the friction loss factors.

It is very rare that a real installation meets the ideal condition, it must therefore be noted that the entire system effect be taken into account to calculate the true performance requirements of the fan, i.e. • All duct system components and non-uniform

Inlet connections Inlet spin The various connections shown below all cause air spin at the fan inlet. Air spin is generally either in the direction of, or opposite to the direction of rotation of the fan impeller. If it is opposite to direction of rotation of the impeller, the power consumption will be increased.

If it is µin the direction of impeller rotation, capacity will be reduced along with power consumption. Using guide vanes either upstream or in the bends can minimize loss of capacity and static pressure. The friction loss caused by such vanes will need to be added to overall system loss.

There are two solutions to this problem: • Non-uniform airflow at the fan inlet can be corrected with the use of guide vanes. We suggest that you contact our engineering department for the selection of such equipment.

Direction of impeller rotation

b) Reverse spin

5 guide vanes in elbow eliminate spin.

d

a) Forward spin

2 baffles placed at 90° angles

1,5 d

Sheet steel flow straightener max. gage O,003 D

0,45 d

c) Mixing box at fan inlet causing forward spin.

38

d) Filter at fan inlet causing forward spin.

Bee's nest

a

a = 0,15 d

Cross-vane arrangement eliminates spin

Non-uniform inlet air velocity

Fig. 1

Duct bends at the fan inlet usually cause poor inlet distribution, with the higher air velocities at the outer radius of the bend (fig. 1). d

The problem can be corrected by:

L

• installing a straight section of at least 5 duct diameters (L) between the fan inlet and the bend.

R

• installing vanes in the bend at a minimum distance of twice the inlet diameter of the fan inlet (L). • increasing the duct diameter before the fan, thereby increasing the radius of the bend. In this case, a converging section should be located at the fan inlet. Duct diameters should not exceed 1.5 times the fan inlet diameter.

Fig. 2 1/2 d

d

1/2 d

Fan capacity may be adversely affected when the space between 2 fans or between the fan inlet and the wall is too small (fig.2).

d

The minimum distances shown should correct the problem.

Discharge connections Bends, louver dampers connected directly to the fan outlet. Discharge velocities are not uniform at the fan outlet (fig. 3), which is why duct system components installed immediately downstream of the fan will cause high pressure drops. A good duct layout should have components installed at a minimum distance of: 3x

In certain installations where it is necessary to install ductwork components near to the fan outlet, the capacity loss may be minimized by the use of a diverging duct section immediately after the outlet (fig. 4). The length of the section should be such that its discharge velocity equals the mean fan inlet velocity measured in the plane of the cone.

4 (a x b) π

from the fan outlet, shown as “Le” in fig. 3.

Fig. 3

Fig. 4

axb

L

Le

Outlet Free With discharge velocities not being uniform at the fan outlet as shown, an additionnal pressure loss will be incurred, the magnitude of which will depend on the size of fan used, is to be added when the fan discharges directly into a plenum as the cross sectional area of the duct is larger than fan discharge area.

39

Ancillaries

Standard ancillaries 1 Inlet Flange (optional on Centripal L). Meets ISO 13351 requirements. Inlet diameters from 315 to 1600 mm sized on the R20 system.

2 Outlet Flange Meets ISO 13351 requirements.

3 Casing access Door Bolted access door.

Optionnal ancillaries 10 Grease nipples and exhaust holes 11 Casing Drain 20/27 male thread stub with cap. Not available on 270° orientations.

12 Matching flange (see Inlet and Outlet Flange specifications).

Oversize V-Belt and cast iron sheave type sized to ISO 5292. Drive meets ISO 4184.

5 Shaft Guard Bolted onto bearing supports. Simplifies bearinf cap disassembly.

6 Cooling Impeller Guard Bolted onto bearing supports. Integral air slots.

7 Drive Guard Bolted onto the casing base. Integral air slots and two inspection doors for speed and belt checks.

8 Belt Tensioning System Located under the motors mount for quick and easy motor repositioning.

9 Bearings Plummer block bearing type. Ball or roller bearings fitted as a function of operating conditions and size to ISO 281 for a useful life of 40,000 hours at maximum shaft speed.

40

18 Cylinder-type Filter Disposable cartridge type inlet filter with 90 % efficiency rating.

19 Anti-vibration Mountings Meets ISO 13852 requirements.

4 Belt-Drive

17 Silencer Cylindrical silencer, available with or without pod (on request).

Supplied with bolts for installation.

13 Safety Wire Guard

Standard ancillaries for belt-drive arrangement

16 Inlet Vane Control Unit (see our Gyropal literature).

Spot welded stainless steel AISI 204, factory fitted.

Anti-vibration mountings for installation under fan feet.

20 Electric Motor (all types and models).

14 Matching flange (see Inlet and Outlet Flange specifications). Supplied with bolts for installation.

15 Flexible connection sleeve and deflector Flexible connection sleeve Class M1 fire rated flexible connections designed for continuous operation at temperatures in excess of 300 °C and operating pressures from –9,500 Pa to +15,000 Pa. Circular inlet sleeves flanged at both ends. Outlet sleeves rectangular or rectangularcircular and flanged at both ends, with the circular section sized to the fan inlet diameter. Deflector Required to protect flexible connection sleeves against extremely high or low pressures and heavily dust-laden air.

21 Inverter drive speed controller (frequency converter).

22 Damper (on request)

17

13

22 6

5

21 15

4

14 3 10

2 9

7

19

12

8

20

16

11

13

1

15

17

18

41

Centripal EU fans A new range developed with the latest IT tools including Finite Element Analysis.

A laboratory with a full compliment of measurement equipment: over-speed installation, fatigue tests, test rigs for measuring fan performance, noise and vibrations, according to the latest international standards.

42

Solyvent in the Fläkt Woods Group: Created in 1919, Fläkt Solyvent Ventec has been a reference on the industrial ventilation market, in France and world-wide, for "Heavy Duty Applications"(Cement, Power, Steel, Petrochemical), as well as "Light Industrial Applications" (process fans and building ventilation). Fläkt Solyvent Ventec offers a comprehensive range of centrifugal and axial flow fans, in either standard design, adapted to customer needs, or completely developed to technical specifications. The continuous development of product ranges, material employed or production tools allow Solyvent to be the "Centre of Excellence for Centrifugal fans" within the Fläkt Woods Group. ISO 9000 V 2000 certification shows the committment of Solyvent in its quality process management.

43

Fläkt Solyvent-Ventec Fläkt Woods AB Kung143, Hans 12République rueväg de la SE-192 68 SOLLENTUNA B.P. 67 Sweden 69882 Meyzieu Cedex France Tel: t+46 626 4945 0013 00 + 338(0) 4 72 Fax:+46 626 7345 1013 42 f + 338(0) 4 72

Heavy Industry Industry Air Movement Fläkt Fläkt Solyvent-Ventec Woods Limited Tufnell WaySabatier 30, rue Paul Colchester, Essex B.P. 23 UnitedChalon/Saône Kingdom Cedex France 71102 Tel: +44 t +33 (0) 3 1206 85 41 544122 73 11 Fax:+44 f +33 (0) 3 1206 85 41 574434 73 22

w www.flaktwoods.com

Fläkt Woods reserves its rights to modify the technical datas described in the document anytime. Informations are not contractual. Should you need any further information, please contact the local agent in your country.

44

TS-JPG - CSP - (V - 09/2007) - printed in France.

Light Industry Building Air Climate