Fans

Product Line

� Jet Fans

TLT-Turbo GmbH

Your partner for tunnel ventilation

Product range jet fans

Characteristics of a longitudinal tunnel ventilation

Modern production ensures a constantly high qualityOur services

Research and development

Technical description of jet fans

Dimensioning charts

Dimensioning aid

Suspension of jet fans in the tunnel section

Impeller specification

Tender text

References for jet fans installed

The tunnel of Øresund

Visit our web site

Table of contents

2

3

4

5

6 - 7

8

9

10 - 11

12

13

14 - 15

16

17 - 20

21

22

23

TLT-Turbo GmbH has more than 100 years ofexperience in ventilation technology.

Our engineers have been working on thedevelopment, construction and production ofturbo ventilators for more than 30 years.

The qualities and advatages, which distinguishour new jet fans in global competition todayand in the future and make them successfulare:

• highest efficiency

• filed aerodynamics

• optimal sound protection

• excellent corrosion protection

• accessories offered in a great variety

As leading producer of fans and systems witha long tradition, we develop innovativetechnical solutions with the highest possibleefficiency.

Current reference.

For the complete ventilating system of theTunnel Øresund (lenght: 4 km) betweenDenmark and Sweden, the new fans of TLT-Turbo GmbH were installed.

Your Partner for Tunnel Ventilation

3

For short road tunnels, where the naturalventilation is not sufficient, a pure longitudinaltunnel ventilation is used.

With this kind of tunnel ventilation the supplyof fresh air is realized by jet fans.

The pure longitudinal tunnel ventilation isincreasingly being used for longer tunnels, too.

Jet fans are axial fans with free inlet and outletsection.

They are mounted on the ceiling or on the sidedirectly in the cross-section of the tunnel.

Jet fans suck in a small amount of the tunnelair and blow it back into the cross-section ofthe tunnel with a high kinetic energy.

In this process an impulse exchange takesplace between the propulsion jet and the aircolumn of the tunnel, and this air column is setin motion in the direction of flow. Importantqualities are efficiency, aerodynamics, soundand corrosion protection of such systems.

Product Range Jet Fans

4

Øresund Tunnel

Tunnel gate

For the system of a semi-transversalventilation (central ventilation stations) jet fanscan be used, in order to control the flow ofsmoke in the case of fire.

Thus, for example, a too high flow relocityresulting from thermal current or undesirabledirection of flow can be influenced in such away, that a possible escape route remains freefrom smoke to a great extent.

Depending on the traffic conditions, the naturalventilation of road tunnels, can be supported,increased, decreased or stabilized by using jetfans.

The jet fans create a defined longitudinalspeed of the air column in the tube.

This speed must be individually adjusted to therespective circumstances (tunnel cross-section, traffic volume, etc.), in order to adhereto the respective effective pollution limits.

The disadvantage of a pure longitudinalventilation is that the pollutant concentration(Ks) linearly increases along the tunnel tubetowards the end of the tunnel, because noexchange takes place between polluted tunnelair and fresh air along the length of the tunnel(TL).

Therefore, at the end of the tunnel theconcentration is the highest

(see fig. 1 longitudinal ventilation).

For city tunnels, the extraction of polluted air ismostly realized with large axial flow fans at theexit gate, in order to distribute the highlypolluted air via an exhaust air duct into theatmosphere, maintaining the immission at thegate within the permissible limits.

(see fig. 2 longitudinal ventilation with exhaustsystem).

For longer tunnels with longitudinal ventilationmostly a longitudinal ventilation in sections(intermediate) is used.

There the tunnel length is subdivided intoseveral sections.

At the end of each section the polluted tunnelair is extracted through divided ducts bymeans of axial flow fans and at the same timefresh air is blown into the next section.

(see fig. 3 longitudinal ventilation in sections).

With these measures, fires in the tunnel can becontrolled better, too.

Characteristics of a LongitudinalVentilation

5

Ks

TL

Kzul

Ks

TL

Kzul

Ks

TL

Kzul

Fig. 1 longitudinal ventilation

Fig. 2 longitudinal ventilation with exhaust system

Fig. 3 longitudinal ventilation in sections

6

Modern Production Ensures a…

Excerpt from the declaration of theTLT management regarding qualitycontrol:

„TLT-Turbo GmbH supplies pro-ducts, which in view of their qualitysuch as technical design, productionand service, correspond to the re-quirements demanded by the cus-tomers and the authorities, and whichoffer a high degree of safety reliabilityand efficiency”.

Each unit is subject to a test run withinthe frame of the ISO EN 9001 beforeleaving the factory. The test records areattached to the product.

We have all important national andinternational quality certificates.

The wide productionrange of our jet fans issubject to the highestdemands and flexibilityduring production.

Motivated specialists,coupled with one of themost modern produc-tion processes, ensureconstantly high qualityand improvement ofour products. Throughthe quality manage-ment system inaccordance with DINEN ISO 9001 a conti-nuous improvement of quality is attained forthe benefit of our customers.

Computer-controlled coil plantfor cutting sheet metal

Program-controlled CNCnibbling machine

Precise laser cutting in sheetmetal working

1000 t deep drawing press

Silencer assembly Jet fan assembly

7

Constantly High Quality

Assembly of jet fans for tunnelventilation

Pretreatment plant forpowder coating

Welding robot Powder coating plant withpretreatment

Our contribution to environment protection

We have taken the following measures forprotecting ressources and environment:

• Modern surface treatment

• Powder coating with purification of sewage water

• Monitored production facilities

Assembly hall for jet fans Electrostatic powder coating line

8

TLT-Turbo GmbH has developed its ownprogram for the design of longitudinallyventilated tunnels, on the basis of internationalguidelines such as PIARC, RVS and RABT.

Based on this and knowing the key features,we can carry out a complete aerodynamiccalculation of the tunnel.

In addition to the delivery, assembly andcommissioning of tunnel fans we also offercomplete support during the planning anddesign for road and railway tunnels as well asfor subway ventilation.

As turn-key supplier of complete systems, wedevelop individually optimized solutions forcontrol and monitoring of tunnel fans,including the measuring instruments required.

Our Services

Suspension of jet fan in a rectangular profile Axial fan in the tunnel of Bad Godesberg

9

Research and Development

Fire test jet fans: The suitability of the TURBO LUFTTECHNIK jet fans in case of fire at 250°C for an operating time of atleast 90 minutes was proved during a large-scale test at the independent testing institute of DMT at Dortmund.

At our research and development departmentwe are permanently improving our productrange and adapt it to the most varied require-ments.The most modern investigating and testingmethods, co-operation with recognized

universities and international researchinstitutions as well as exchange of experiencewith our customers ensure, that the latesttechnological developments in aerodynamicsare permanently being integrated into thedevelopment of our jet fans.

TLT-Turbo GmbH test dated 18.02.1998

northsouth

Powerconsumptionoffan[A]

Atthefan[˚C]

suctionarea[˚C]

Jet fans

By the term „jet fan” a unit is understood,which represents the machine ready for oper-ation after installation into the section reservedfor traffic and connection to the electric powersupply, and which is used for supplying freshair by means of exchange of impulses betweenpropulsion jet and remaining quantity of air.

A jet fan mainly consists of the followingcomponents:

• the fan housing made of steel sheet S 235

JR welded, galvanized and powder coated.

• the impeller, made of sea water resistant

aluminium cast alloy with individually

adjustable light alloy blades.

• the vibration reducing suspension device for

the fan, made of S 235 JR with the damping

elements.

• safety equipment preventing the fan from

falling on the road (stainless-steel chains)

and a safety switch (optional).

• the drive motor with cables lead towards

outside and the terminal box.

• silencers on suction and discharge side

made from S 235 JR material with perforated

plate made from high quality inox steel

material group A4.

Denomination TAS x

T: Tunnel

A: Axial

S: Jet fan

x: Size (impeller diameter [dm])

Technical Description…

Fan housing (1).

The fan housing consists of three screwedducts, made of welded sheet steel.

As protection against corrosion the housing isgalvanized (min. 50 µm) and provided with apowder coating (100 µm ± 20 µm).

The joining elements between the housingelements and the silencers consist of highquality stainless-steel.

Impeller with blades (2+3)

The impeller is an aluminium alloy casting withblades individually adjustable during standstill.

The impeller is completely closed and istherefore optimally protected against corro-sion, particularly against crevice corrosion.

For high demands with regard to corrosion,e.g. seawater air, the impeller rotor is alsopowder coated.

1

2

3

4

5

fan housing

impeller

impeller blades

nose fairing

tail fairing

6

7

8

9

10

supporting frame

drive motor

motor support

nozzle

silencer

10

11

of Jet Fans

Drive motor (7)

Three phase current asynchronous squirrel-cage motors are used as drive motors for thejet fans.

The motors are suitable for direct start-up.

The housings are made of cast iron withcooling ribs. Cooling is made through the airstream of the jet fans.

The antifriction bearings of the motor bearingsare sealed for life.

The motor corresponds to the insulation classH with heating in accordance with B and theprotection class IP55.

Motor support (8)

The motor is fixed in the fan housing by meansof sufficiently dimensioned supporting struts.

The supporting struts also serve as down-stream guiding sheets.

Nozzle and silencer (9+10)

The inlet and outlet parts of the jet fan aredesigned as silencers with integrated,aerodynamically optimized nozzle.

The silencers are designed in such a way thatthe required A-weighted sound power level(execution of the acoustic test in accordancewith ISO 13350) is met.

The silencers are made from a galvanized steelsheet housing, which is provided with thesame powder coating as the fan housing andmade of stainless steel perforated plates ofmaterial group A4.

Stainless design

As an option, we also offer our jet fanscompletely made of special steel.

Nose and tail fairings (4+5)

In front of the impeller there is anaerodynamically designed, non-rotating nosefairing. For unidirectional fans a rotating fairingis used. Nose and tail fairing are provided withthe same corrosion protection as the fanhousing.

On the downstream side of the motor anaerodynamically designed, corrosion protec-ted tail fairing is arranged.

Suspension (6)

The jet fans are suspended with a supportframe. The fans are fixed with heavy-dutysupport anchors.

The support frame consists of reinforced U-beams, whose upper webs of channels areadapted to the respective tunnel ceiling.

The profiled support frames consist ofgalvanized S 235 JR steel, for protectionagainst corrosion, and they are powder-coated, too.

Vibration dampers are arranged fan betweenthe ventilator housing and suspension device.

To prevent the fan from falling down, if thedowels become detached, stainless steelchains, which do not to bear any weight undernormal operating conditions, are also mountedat the ends of the fan.

If the fan falls into these chains, it isautomatically switched off by the safety switch(optional) which is mounted at the housing.

Type...

....

TAS 5,6

TAS 6,3

TAS 7,1

TAS 9,0

TAS 10,0

TAS 11,2

TAS 12,5

Impeller diameter[mm]

560

630

710

900

1000

1120

1250

Thrust[N]

350

450

800

600

960

1400

1600

Electrical powerconsumption [kw]

13

16

32

19

32

50

52

Volume flow[m3/s]

8.5

10.8

16.3

17.8

25.1

33.9

40.5

Air outlet speed

[m/s]

34.4

34.7

41.0

28.0

31.9

34.4

33.0

Reversible jet fans

Details of the types TAS 14 and TAS 16 can be obtained upon request. All fans listed are 100% reversible!Unidirectional fans are individually dimensioned upon request.

TAS 5,6

TAS 6,3

TAS 7,1

TAS 9,0

TAS 10,0

TAS 11,2

TAS 12,5

Dimensioning Charts

12

Silencer length

Electrical power consumption Pauf (kW)

Thrust(N)

Wind pressure

The resulting total pressure (∆pt= Σ∆pi) mustbe overcome by the installed jet fans. Therequired total thrust results from:

The thrust indicated in the data lists is alwaysthe static thrust SSt measured on the test standin the free field.

In the tunnel this static thrust is reduced to aneffective thrust by the interfering tunnel flowstream and the proximity of the suspensiondevice to the wall, which must be taken intoaccount when designing the ventilationsystem.

The effective thrust Seff appearing in the tunnelresults from:

13

Many influencing factors must be taken intoconsideration when choosing the ventilationsystem for tunnel systems.

Most important for dimesioning of theventilating system is the quantity of fresh airrequired with different traffic densities.

TURBO LUFTTECHNIK can give advice andsupport for dimensioning ventilating systems.

With the software developed by us, based onthe standards of the relevant guidelines(PIARC, RVS, RABT), the amount of fresh aircan be calculated if the boundary conditionsand traffic data are known.

In order to transport this fresh air through thetunnel by means of jet fans, a certain amountof total thrust is required.

In order to calculate this thrust, the resistanceswhich have to be overcome must bedetermined.

They consist of:

• Friction losses in the tunnel

• Inlet and outlet losses at the gates

• Piston effect of the vehicles

• Cross sectional obstructions due tovehicles or other installations

• Thermal flows in the tunnel

• Wind load stressing on the gates

The resulting pressure losses can beessentially arithmetically determined with theaid of the following three formulas:

Friction losses

Pressure losses resulting from vehicles

Dimensioning Aid

Loss coefficient of tunnel gate

Coefficient of friction of tunnel wall

Tunnel length

Hydraulic diameter

Air density

Velocity of the tunnel air (T), the vehicles (VEH),

the wind (W) and the outlet of the fan

Cross section of the tunnel

Quantity, vehicles

Drag coefficient, vehicles

Front surface, vehicles

Installation factor

ζ

λ

l

DH

v

ATN

Cw

A

k

Seff = k · (1- ––––) · SSt = k · j · SStvTvjet

Stot = ∆ pt · AT

∆ p3 = –– · vW2

2

∆p1 = (1 + ζ + λ · –––) · –– vT · SIGN (vT)l2

δ

δ

δ

δ

DH

∆p2 = –– · –– · (NPKW · CwPKW · APKW + NHGV · CwHGV · AHGV) · (vveh-vt ) · SIGN (vT-vveh)21AT

2

2

Symbols

Suspension of Jet Fans…

14

Diagram 1: Installation factor k Diagram 2: Relative speed factor j

judged as a compromise between distance tothe ceiling and distance to the clearancegauge. Other influencing factors, which haveto be considered for the technical design of thefans are for example backflows from one tubeto the other or thermal lift resulting from leveldifferences.

The installation factor „k” is determined by thesmall distance of the suspension device to thewall.

In diagram 1 „k” is represented as a function ofthe distance ratio z/d. In diagram 1 the optimaldistance to the ceiling is listed over theconstruction size, whereas „optimal” is to be

Chart 1

Optimal distance from the ceiling

Type

d [mm]

z [mm]

TAS 5,6

560

530

TAS 6,3

630

560

TAS 7,1

710

600

TAS 9,0

900

730

TAS 10,0

1000

790

TAS 11,2

1120

850

TAS 12,5

1250

920

tunnel ceiling

in the Tunnel Section

Various suspension frames

In order to attain an optimal installation factor,the distance to the ceiling must be observed forall kinds of suspensions of table 1.

The suspension device consists of two U-shaped steel plates,which are connectedwith each other by twoangle sections. For theuse in a tunnel vault theU-shaped steel platesare extended towardsthe contour of thevault. The distances ofthe holes to be made, please find in the table on the right.

15

Type

TAS 5,6

TAS 6,3

TAS 7,1

TAS 9,0

TAS 10,0

TAS 11,2

TAS 12,5

A (mm)

570

705

760

895

1005

1110

1260

B (mm)

460

520

590

680

780

880

970

B

C

C: The distances of safety chains depend on the dimensioning of the silencers dimensions.

A

(1) Suspension for rectangular profile.This arrangement is mainly used forcity tunnels.

2) Suspension for vault profiles (centralarangement). This arrangement ismainly used for alpine tunnels.

(3) Suspension for vault profiles(decentral arangement). This arrange-ment is also mainly used for alpinetunnels.

16

Impeller specification

Consisting of of impeller hub and bladesindividually adjustable during standstill. Thehub is sealed with a cover after beingmounted. The closed construction preventsmoisture from penetrating into the impeller andto the fixation of the blades. Thus, the dangerof cravice corrosion in the area of blade food,is excluded.

The completely assembled impeller is staticallyand dynamically balanced according to qualityG2.5 in accordance with DIN ISO 1940.

The finished impeller is provided with anextremely abrasionproof powdered varnish ascorrosion protection - the suitability of thisconception for the aggressive tunnel atmos-phere was proved in a 1000 hours salt spraytest at an independent test institute. The closed impeller prevents cravice corrosion

Impeller after powder coating

Impeller before powder coating

Electrostatic powder coating of impellers

17

Tender Text

No. Quantity DescriptionPrice per unit

Euro EuroCent Cent

Total

Jet fans type TAS

The design of jet fans should be as simple and robust aspossible. They have to be designed in such a way, that thespecial conditions in the aggressive tunnel atmosphere donot affect the reliability during the stipulated service life of20 years.This applies particularly to the corrosion protection.The fan must be able to work properly for 90 minutes at250°C. A corresponding certificate of an independent testinginstitute is to be submitted.

Impeller

The impeller, consisting of a hub and blades individuallyadjustable during standstill has to be designed for 100%reverse operation. In order to withstand the aggressivetunnel atmosphere, the impeller consists of a seawaterresistant AISIMg alloy.

In order to avoid crevice corrosion in the area of the fixationof the blades, the impeller is a completely closedconstruction i.e. the fixation screws must not come intocontact with the tunnel atmosphere. The impeller is to bedynamically balanced according to quality G2.5 (DIN ISO1940). Impeller: Al-casting alloy G-AlSi9Mg wa.

Electric drive motor

Three-phase current asynchronous sqirrel-cage rotor inaccordance with IEC guidelines without built on fan. Themotor has to be mounted in the fan housing by means of a4-point fixation (IMB 30). A fixation of the flange next to theimpeller is not possible. The flange protection class of themotor is IP 55 with insulation class H, according to B andsuitable for direct start up.

The antifriction bearings are sealed for life with a life of min.40000 h. The motor windings are made with coldconductors for temperature monitoring.

The motor must be suitable for an operating time of 90minutes at 250°C. The cables (power and monitoring) mustbe free from halogen and flameproof and connected to theexternal terminal box.

18

Tender Text

No. Quantity DescriptionPrice per unit

Euro EuroCent Cent

Total

Fan housing with motor support

Standard housing with welded fixation struts for the centricinstallation of the drive motor. All welding seams arecontinuously welded. On the outside of the housing there isa powder coated terminal box made of aluminium castingfor the motor cables. Suitable screwed cable glands madeof brass are to be provided for connection. The size as wellas the terminal area must be agreed upon in advance withthe customer. Housing and silencer: Steel S235JR,galvanised in accordance with ISO 1462 (min. 50 µm) andpowder coated RAL 7030 (100 µm). In front of the impellerguiding ribs with a corresponding tail fairing are arranged forthe optimization of aerodynamics.

Silencers

Each silencer is to be equipped with an aerodynamicallyshaped inlet nozzle, which is welded continuously the outershell of the silencer.

The perforated plate is made from A4 inox steel. Betweenthe perforated plate and the outer shell the sound absor-bing, non-inflammable fibre wool is to be arranged.

To prevent the fibre wool from coming out through the per-forated plate, a water-repellent, sound pervious glass fleeceis to be inserted. The silencers have to be dimensioned insuch a way, that the sound power level indicated in the datalist won´t be exceeded.

Suspension

The jet fans have to be mounted on the ceiling parallel to thelongitudinal axis of the tunnel. The mounting frame has to bea rigid welded construction.

Heavy duty support anchors made of Inox steel 1.4529approved for zonessubjekt to tensile forces have to be used.No vibrations may be be transferred to the tunnel ceiling,therefore vibration dampers have to be provided.

No. Quantity DescriptionPrice per unit

Euro EuroCent Cent

Total

Ceiling support frames: Steel S235JR, galvanized inaccordance with ISO 1462 (min. 50 µm) and powder coatedRAL 7030 (100 µm).

Suspension frames for flat ceilings

or suspension frames for vaulted ceilings, centric

or suspension frames for vaulted ceilings, inclined

Safety chains

In case the suspension fails, the fan is protected from fallingonto the road by safety chains.

On the silencer ends safety chains made of stainless steelhave to be arranged on the tunnel ceiling independent of thesuspension frames.

Heavy duty anchors from 1.4529 have be arranged as well.Under normal operating conditions the chains do not bearany load.

Safety switch

The fan is automatically switched-off by the safety switch,which is attached to the housing.

The safety switch is designed as an opening safety switch.

Technical data of the fan

Impeller diameter: [mm]

Reversible static thrust: [N]

Shaft capacity: [kW]

Volume flow: [m3/s]

Reference density: 1.21 [kg/m3]

Sound power level: [dB(A)]

Basis: ISO 13350

19

Tender Text

20

Tender Text

No. Quantity DescriptionPrice per unit

Euro EuroCent Cent

Total

Technical data of the motor

Nominal voltage: 400 [V]

Mains frequency: 50 [Hz]

Nominal power: [kW]

Nominal current: [A]

Synchronous speed: [min-1]

Insulation class: H with class B temperature rise

Protection class: IP 55

Operating mode: S1

Bearing life: at least 40.000 h

Type: IMB 30

Motor make: West-European manufacturer

Make: TLT-Turbo

Type: TAS

Accessories

� Monitoring of the bearing temperature by means of coldconductors (PTC).

� Monitoring of the bearing temperature by means ofresistance-thermometer (PT100) on the motor bearing.

� Control of the bearing temperature by means of resistor-thermometer (PT100) on the motor winding.

� Monitoring/control of the antifriction bearing condition(SPM).

� Monitoring of vibration by means of vibration fensor.

� Monitoring of vibration by means of vibration measuring-system.

� Monitoring of breaking off (detachment of the fan fixation.

� Standstill heating for drive motor.

� Evaluation instruments for the mentioned monitoringequipment

References for jet fans installed

21

Tunnel

Tunnel du chat

Dalaaser Tunnel

Flirscher Tunnel

Tanzenberg

Citytunnel Bregenz

Bochum Westtangente

Ministerium Straßen und Transport

Wolfsbergtunnel

Hugenwaldtunnel

Hugenwaldtunnel

Niklasdorftunnel

Cassanawaldtunnel

Sarganz

Lan Zhou Qi

Roppener Tunnel

Karawanken

Habsburg

Schinznacher Feld

Wattwil

Pians – Quadratsch

Bielefeld

A22 – Überdeckung

Stephanshorn

Tunnel Caluire

Tunnel Tuhobic

Tunnel Sleme

Tunnel Sopac

Daboo

Tunnel d’Aignebelle

Tunnel d’Hurtieres

Tunnel Vrsek

Tunnel Lucice

Tunnel Les Vignes

Trancée couverte de Combette

Galerie de Develier

Bad Godesberg

Tunnel Britz

Tunnel Landeck

Schönberg Tunnel

Øresund – Link

Tunnel Birchi

Tunnel Gorges du Seyon

Tunnel Vue des Alpes

Tunnel Juk-Ryoung

Baregg-Tunnel

Country

France

Austria

Austria

Austria

Austria

Germany

Iran

Austria

Germany

Germany

Austria

Switzerland

Switzerland

China

Austria

Austria

Switzerland

Switzerland

Switzerland

Austria

Germany

Austria

Switzerland

France

Kroatien

Croatia

Croatia

South Corea

France

France

Croatia

Croatia

Switzerland

Switzerland

Switzerland

Germany

Germany

Austria

Austria

Denmark

Switzerland

Switzerland

Switzerland

Corea

Switzerland

Fan type

TAS 8,0

TAS 9,0

TAS 9,0

TAS 14,5

STVN 7-15/2

STVNR 6-11/2

STVN 7-15/2

STVN 12-37/4

STVNR 7-15/2

STVNR 5-3/2

STVNR 14-15/8

STVNR 7-11/2

STVNR 10-30/4

TAS 9,0

STVNR 12/45/6

TAS 18,0

TAS 13,5

TAS 13,5

TAS 9,0

TAS 9,0

TAS 11,2

TAS 5,0

TAS 9,0

TAS 12,5

TAS 12,5

TAS 12,5

TAS 12,5

TAS 10,0

TAS 11,2

TAS 11,2

TAS 12,5

TAS 12,5

TAS 12,5

TAS 12,5

TAS 10,0

TAS 6,3

TAS 6,3

TAS 10,0

TAS 10,0

TAS 7,1

TAS 6,3

TAS 6,3

TAS 6,3

TAS 10,0

TAS 13,5

Quantity

6

16

6

15

16

16

32

3

16

1

13

18

32

14

4

24

42

4

13

16

11

88

2

56

50

50

50

12

20

24

6

4

24

8

8

30

72

2

12

200

58

14

8

8

4

Year ofconstruction

1968

1979

1979

1984

1984

1984

1984

1985

1985

1985

1986

1986

1987

1987

1989

1990

1991

1991

1993

1994

1994

1994

1995

1996

1996

1996

1996

1996

1996

1996

1996

1996

1997

1997

1998

1998

1999

1999

1999

1999

2000

2000

2000

2000

2000

22

The Øresund-Tunnel

With 200 jet fans of typeTAS 7.1 of the latest gene-ration, we are providingfresh air in the ØresundLink.

The Øresund Link is animpressive tunnel andbridge connection betweenDenmark and Sweden.

The construction of the4,050 m long tunnel wasnecessary, because a con-tinuous bridge would havean adverse effect on the airtraffic of the airport in theneighbouring city ofCopenhagen.

An artificial island is con-nected to the tunnel fromwhere the route is led onthe 7,845 m long bridge.

Visit our Web Site

Would you like to learn more about TLT-TurboGmbH? Visit us on the web.

On our web sites you can quickly get acomprehensive survey of the service spectrumoffered by TLT-Turbo GmbH.

We look forward to your visit: www.tlt.de

You can also obtain further information byemail under: tunnel@tlt.de or give us a ringunder: Phone + 49.6332.808-0.

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Informations

TLT-Turbo GmbH

TLT-Turbo GmbHFans, Service and Systems

Gleiwitzstraße 766482 Zweibrücken/Germany

Phone: + 49 (0)6332-808-0Fax: + 49 (0)6332-808-267

E-mail: tlt@tlt.deWebsite: www.tlt.de

Standard- and Industrialfans

Am Weinberg 6836251 Bad Hersfeld/Germany

Phone: + 49 (0)6621-950-0Fax: + 49 (0)6621-950-100

E-mail: serie@tlt.de / industrie@tlt.deWebsite: www.tlt.de

© 2008 by TLT-Turbo GmbH · 3th edition 08/08/PDF/Bopp · Subject to error and modifications.