FAN AND AIR HEATER TECHNOLOGY

GLOBAL POWER GENERATION

www.howden.com

GLOBAL POWER GENERATION1

HOWDEN…THE GLOBAL FORCE IN AIR AND GAS HANDLING

Air heaters: Since 1923 Howden has beensupplying rotary air heaters to the power andprocess industries.

Cooling fans: Our ultra-low noise cooling fans can help contractors to meet very low noisespecifications or increase cooling within existingacoustic limits.

Air preheater upgrades: Our sealing systemenhancement is so effective that in many cases itallows the station to significantly increase MWoutput.

Axial flow fans: We invented the Variax variablepitch axial flow fan in 1951 and since then havesupplied more than 3000 fans to power stations and FGD plant throughout the world.

Centrifugal fans: We invented the aerofoil bladedcentrifugal fan 50 years ago and now have suppliedmore than 25,000 heavy duty fans.

Our customers turn to us because we bring over a century of expertise to some of the mostrobust, highly engineered plant in the world. No one has moreexperience.

With experience stretching back 150 years, Howden Power is an integral part of the global powergeneration industry. Each of our specialised productcompanies is a world leader in its field. Our successlies in our solutions orientated approach to customersatisfaction. The advanced technology and inherentreliability of our fans and heat exchangers combinedwith the comprehensive support which is acornerstone of our philosophy provides unrivalledvalue to our customers and users. From projectinception to the end of plant life we work inpartnership to provide technical advice, projectmanagement, spares and support.

Our products are used in many varied applicationswhere the highest levels of performance andreliability are of paramount importance. From basic industries such as power generation, steel and cement manufacture to high technologyinstallations such as aerodynamic wind tunnel testing.

FGD: We supplied some of the world’s first FGD systems in 1934, and since then we have become theglobal supplier of gas-gas heaters and booster fans.

ADVANCED TECHNOLOGY WITH PROVENPERFORMANCE & RELIABILITY

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GLOBAL POWER GENERATION3

HOWDEN…INNOVATIVE, MARKETLEADING UTILITY BOILER PRODUCTS

Centrifugal fans: Our fans are optimised using the latestfinite element and numerical flow modelling techniques.

Mixed flow fans: In many cases this type of fan can provide an optimum balance between centrifugal and axial fan characteristics.

Air heaters: We configure our airheaters to meet the customer’s performance, layout and constructionrequirements.

With unrivalled experience in the power generation industry we use our in-depth knowledge to provide innovative market leading products and services for all sizes and types of utility boilers.

Axial flow fans: Our axial fans can be fully maintained in-situ, without the need to remove major components to the workshop.

FANS:

AXIAL FANS

CENTRIFUGAL FANS

MIXED FLOW FANS

AIR HEATERS:

BISECTOR AIR HEATERS

TRISECTOR AIR HEATERS

QUADSECTOR AIR HEATERS

CONCENTRIC AIR HEATERS

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ENGINEERING EXCELLENCE DELIVERSPRODUCTS THAT LEAD THE MARKET

Rotary heater elements: We can supply the optimumelement configuration for any set of operating parameters.

Air preheater upgrades: We can increase heat recovery, reduce leakage or improve the cleanability of existing air preheaters,irrespective of original manufacturer.

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HOWDEN…ENVIRONMENTALPROTECTION

Our comprehensive range of fans and heat exchangers isspecifically designed for use in systems to reduce SOx, NOx and other emissions; such as wet and dry FGD, SCR, SNCR,overfire air and gas & coal reburn.

We continually use our understanding of the chemistry of the gas path and the interaction of the fans and heat exchangers within it to provide the most cost-effective solution for the client.

Gas reheaters: Optimum element selection allied to aneffective cleaning system minimises the risk of fouling and consequent pressure drop rise.

Gas reheaters: Our gas-gas heaters minimise the potential for fouling and corrosion.

Air preheater upgrades: We can reconfigure existing airheaters to meet the demands imposed by new operatingconditions, such as the upstream installation of SCR plant.

FGD: Having supplied the world’s first C Position fans, we now have the world’s largest installed base of FGD booster fans.

GLOBAL POWER GENERATION

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Fans: We supply fans for the wet and dry positions as well as combined ID/Boosters.

Blowers: Our centrifugal turbo blowers are used for FGD oxidation. Heater element profiles: Our knowledge of the processchemistry allows us to choose the correct heater elementprofile, configuration and material. A range of enamellingprocesses allows us to match the level of protection withthe operating environment.

OUR PRODUCTS ARE DEVELOPEDFROM EXPERIENCE GAINED FROMAROUND THE WORLD

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HOWDEN…AFTERMARKETSERVICES

As a supplier of products whoseoperating life can be 40 years, or more, we fully understand the need to meet our customers’ requirements throughout the life of the plant: installation, commissioning, maintenance,refurbishment and enhancement.

We do not just confine ourselves to Howden products but install, maintain and operate rotatingmachinery and other equipmentsuch as materials handling plant andcontrol & instrumentation systems.

Response: Rapid response to breakdown and unforeseen circumstances.

GLOBAL POWER GENERATION

Cooling towers: We upgrade coolingfans to increase output.

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Operation: We operate and maintain a wide range of machinery and plant.

Construction: Complete plant construction can be carried out by our experienced erection teams.

OFFICES, FACTORIES AND SERVICECENTRES THROUGHOUT THE WORLD

Enhancement: Fan enhancement can pay back very quickly.

Elements: We supply a complete range of profiles and baskets.Axial fans: All regular maintenance can be carried out in-situ.

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HOWDEN…COOLINGFANS

Our cooling fans are designed tomaximise aerodynamic performancewhilst minimising noise generation in applications such as cooling towers,air cooled steam condensers and air coolers. In addition to the supplyof fans, we have considerableexperience in increasing thermalperformance or reducing noise inexisting installations by replacing the existing fans.

GLOBAL POWER GENERATION

DEDICATED FANS FOR WET, DRY AND HYBRID COOLING SYSTEMS

The SX fan: the world’s quietest cooling fan for a given aerodynamic output.

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HOWDEN…WORLDWIDEEXPERIENCE

DESIGN | ENGINEERING | MANUFACTURE | TESTING | INSTALLATION | SERVICE

Nowadays customers don’t just need products; they need solutions. Our global capabilities are not limitedto fans and air heaters.

We install, commission, operate and maintain a range of equipment from rotating machinery to complete plant– all backed up with warranties. In short we supply atotal service to hard pressed project and plant managers.

Howden UK Tel: +44 141 885 7300Email: marketing@howden.com

Howden SpainTel: +34 968 32 00 64Email: sales.hps@howden.com

Focussing on its global expertise in fans and rotary heat exchangers, Howden delivers first class technology, project management and customersupport. Wherever our customers are located, a Howden office is close at hand. With engineering, manufacturing and sales offices throughout the world, we understand and satisfy local market needs.

For further information, contact your local representative, our website or any of the companies listed below.

www.howden.com

Howden Denmark Tel: +45 55 77 62 62Email: power@howden.dk

Howden Australia Tel: + 61 2 8844 9100Email: powersales.au@howden.com

Howden NetherlandsTel: +31 74 255 6000Email: cooling.fans@howden.nl

Howden Hua Engineering Co LtdTel: +86 10 66419988Email: jensen@howden.com.cn

©2006 A

ll rights reserved. How

den Group Ltd