GLOBAL STRENGTH LOCAL FOCUS LJUNGSTRÖM

AIR PREHEATERS ®

Alstom is the global leader in the design, manufacturing, installation and maintenance of Ljungström® Air Preheaters. We are proud to be the owner of Ljungström® air preheater technology with its pedigree dating back to the 1920s when the first efficient air preheater was invented in Sweden by Frederick Ljungström.

Today, Alstom owns Ljungström® patents and trademarks across the world and the group also combines the resources of industry leading names SRM, Air Preheater Company, Kraftanlagen, Gadellius, Stein, PBS and APEL.

Alstom Ljungström® Air Preheaters are recognized by boiler companies, utilities and manufacturers around the world as the best products of their type which is why they are more widely used than any other type of heat exchanger.

Modular design. Maximum flexibilityThe modular design concept behind Alstom Ljungström® Air Preheaters is a simple one. Create a family of air preheaters based on the same general platform and incorporating the latest best in-class technologies but which, individually, are tailored to fit a wide variety of different power plants.

Our extensive portfolio of products includes preheaters for sub-critical, super-critical, ultra-supercritical and CFB boilers. All, though, are installed in the same way, with an optimised erection sequence that uses simple structures and the minimum number of assemblies.

Up to the largest sizesWe recognise that thermal power plants are becoming increasingly large. The design flexibility built into our preheaters and, in particular, the wide range of sizes we offer means that we have already been able to meet the requirements of some of the largest plants currently being constructed.

Higher efficiency. Lower costsOur air preheaters can recover up to 15% of boiler heat input, contributing up to 20% of the overall boiler efficiency while representing only 2% of total investment in a typical plant.

The impressive performance of our air preheaters is, in part, the result of our unmatched experience in global boiler projects, so we appreciate that high thermal efficiency, leakage reduction and low pressure drop are all essential to their operation.

Consequently, with our preheaters, we offer adaptable sealing systems giving a wide range of options to reduce leakage including load following leakage control.

QualityOur commitment to quality is at the heart of our business. Our customers know they are receiving the very best products available.

Unrivalled expertise in air preheaters

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A 20°-30°C recovery rate in the Ljungström® Air Preheater accounts for 1-1.5% reduction in the fuel requirements of the boiler. When installed on two 750 MW coal-fired boilers, the energy saved by the Ljungström® Air Preheater is the equivalent of 42 hopper car loads of coal per day

Proven design with customisable optionsLjungström® Air Preheaters have a reputation for rugged reliability and efficient operation that stretches back to the middle of the 20th century. Our current family of products are modular in concept so flexibility is built into their design. This means we can offer a wide range of standardised options when it comes to their construction and installation on site.

Customer benefits

FLEXIBLE ROTOR DESIGN OPTIONS• Centre or peripheral support arrangements• Sizes to meet all preheat requirements

for industrial and utility-sized boilers• Bi-sector, tri-sector and quad-sector arrangements

EFFICIENT SEALING SYSTEMS• Comprehensive options to reduce leakage• Load following leakage control systems• Delivering unique benefits during hot and cold commissioning

ADVANCED TRANSFER SURFACES AND BASKETS• Highest efficiency for lowest pressure drop• Range of profiles that provide easier cleaning

and maintenance during operation• Extended life due to lower soot blowing pressures

REDUCED ERECTION COSTS• Optimised erection sequence with minimum number

of assemblies• Alternative welded and pinned rotor options available

REDUCED MAINTENANCE COSTS• Robust drive configurations• Low maintenance auxiliary systems• Substantial, long-lasting and durable equipment

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Make our airAdvanced modular

Duct and support configurationsThe correct selection of duct arrangements is critical to modern boiler layouts. We recognise this and produce our equipment in configurations to meet all requirements. Our equipment can be supplied in bi-sector, tri-sector and quad-sector arrangements for either a traditional peripheral support arrangement or for centre column support.

Modular site assemblyOur comprehensive understanding of the requirements of site construction activities directly influences the modular design of our air preheaters which incorporates optimised, flexible assembly. As a result, depending on model size and type and the available lift capacity on site, we can tailor production to include efficient partial ground assembly of the units we supply.

Air preheaters for every applicationNo other air preheater supplier can match our vast experience of designing equipment for such a wide range of installations around the world. With our range of versatile modular design platforms and configurations, we are able to meet the many different requirements our customers have.

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preheaters first choice worldwideengineering

Design flexibility means greater customer choiceThis is particularly true with the heart of our Ljungström® Air Preheaters – the rotor. The Alstom range boasts:

• The largest number of rotor sizes of any supplier• Two alternative types of construction• Several different configurations of basket loading• Arrangements from one to four layers of heat transfer baskets

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The rotor Any configuration,

• Welded rotor designs use a welded connection between the rotor shaft and the structural plate work of the rotor

• Site assembly requires considerable welding of critical joints• Connection method is the industry standard, due to its low cost• Rotors of this arrangement are built and then loaded with the element baskets

• Our unique pinned module designs incorporate a patented arrangement of pre-built rotor modules connecting to a special rotor shaft

• The designs increase the life of the rotor by eliminating the thermal stresses that occur in welded rotor designs at the point where the main plates are welded to the rotor shaft

• Rotor modules can be pre-loaded with element baskets prior to connection to the shaft, meaning less time loading baskets at a later stage

• Site erection can be completed in less time and critical shaft to rotor welds are avoided

OPTION BENEFIT / ADVANTAGE

Basic welded rotor Lowest equipment cost

Modular rotor Optimised erection with minimised welding and reduced handling

Double sealed rotor Reduced air to gas direct leakage

Grating style rotor Changeable baskets without disturbing adjacent layers

Our experience and knowledge of different rotor designs has helped to establish us as the leading innovator in rotating air preheater technology

ALSTOM PIONEERED the use of special fixtures in our factories which allow us to build our modular rotor components to the highestlevels of quality and repeatability

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anywhere in the worldassembly

Advanced heating surfacesWe take pride in our long and diversified experience in the design and manufacture of high quality heating elements and are at the cutting edge of new surface development. Our engineers continue to develop new advanced surface technologies in a range of materials, thicknesses and depths to meet our global customer requirements. We are able to furnish heating elements that are optimised for the best heat recovery and lowest pressure drop while remaining compatible with the fuel being fired.

High performance and durabilityCorrect surface configuration, material, and thickness, are integral to the thermal and pressure drop performance of any regenerative heat exchanger. Surfaces developed and optimised by Alstom engineers assure the highest performance and durability available. Our comprehensive range also allows us to provide aftermarket replacements for older surface types and, by installing our latest surfaces which are more efficient and remain cleaner when in operation, deliver efficient upgrade solutions.

Materials and qualityWe offer a range of surface and container materials to accommodate all customer requirements. Our global experience with mild steel, low alloy steel and premium enameled heating surfaces is unrivalled in our industry. Advanced quality control checks and processes ensure that the heating element products manufactured at any of our global facilities perform to our exceptional performance and life standards.

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Delivering long life,At the forefront

Advanced auxiliary equipment and systemsOur air preheaters incorporate systems and equipment that are proven in the field and accepted by customers as the best in their class. We are continuously improving our auxiliary equipment and system options to provide the latest technology and configurations while maintaining the robust reliability in operation that is the hallmark of the Ljungström® Air Preheater.

Bearings and drive systemsThe bearing and drive systems incorporated into our air preheaters are the most reliable and durable designs in our industry and contribute to our air preheaters’ reputation for being problem free (with an impressive 99% availability).

The enameled heat transfer surfaces supplied by Alstom incorporate the latest wet-coated application processes and technology, to provide products with industry leading enamel structure, thermal shock durability, cracking resistance and life

Efficient sealing systemsAs air preheaters get larger the use of sealing systems is increasingly important to ensure low leakage operation. We offer a range of sealing system options delivering the lowest air-to-gas leakage while still maintaining the flexibility to operate across a range of loads. Low maintenance systems are available to provide either full self-adjustment of the sealing plates or multi-position adjustment across a specified range of load points.

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efficiency and low maintenanceof air preheater technology

Wellsville (USA)Concordia (USA)

Vinhedo (Brazil)

Brno (Czech Republic)

Shanghai (China)Delhi (India)

Shahabad (India)

Kobe (Japan)

Osaka (Japan)

Mannheim (Germany)North AmericaEurope

East Asia

India

Latin America

Aftermarket servicesOur involvement with you does not end with the successful installation of one of our air preheaters. We’re committed to our customers and offer additional added-value services. To provide life extension and plant upgrades, we support all existing installations with our genuine replacement parts in addition to component or system upgrades. Our aftermarket solutions provide operators of both Alstom and other OEM equipment with valuable benefits in the areas of thermal efficiency, leakage reduction, fuel compatibility and SCR retrofit upgrades.

• Supply of genuine replacement parts with warranty support• Equipment inspections, condition assessments and life evaluations• Components upgrades for Alstom as well as other air preheater designs• Engineering studies for plant upgrades

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Offices and manufacturingWe are where our

We combine rigorous research and development with a comprehensive global after-sales service to ensure our equipment operates efficiently and cost-effectively in the long-term

Research and developmentResearch and development is key to our technological leadership and our programmes are always adapting to meet the current and future needs of the industry. Our competencies include heat transfer surface computational fluid dynamics (CFD) modeling, prototyping, production and physical testing using multiple sized wind tunnels. We conduct advanced research in air preheater fouling and cold end corrosion and we are constantly improving our understanding of air preheater rotor thermal and fatigue analysis using the latest techniques in finite element analysis (FEA). We are proud to claim that none of our competitors can match our investment and capabilities in these fields.

Field serviceAcross the globe we maintain a highly experienced staff of technical service specialists and engineers who are available 365 days a year to help ensure the efficient and reliable operation of your Ljungström® Air Preheaters. They can assist with outage planning, inspection, and diagnostic services and provide technical assistance for routine and emergency maintenance planning and repair.

Laboratory testingIn our laboratories, we use a range of specialised equipment and procedures to ensure the quality and durability of our preheating products. We maintain metallurgical testing facilities to maintain our excellence in areas such as heating element deposit & corrosion analysis and failure root cause analysis. Our dedicated soot blowing test rig enables us to test surfaces for cleanability as well as operation under adverse conditions and our state of the art switching regenerator provides the platform for us to conduct long-term tests of heat transfer surfaces subjected to a spectrum of thermal, environmental and mechanical conditions.

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facilities across the worldcustomers need us

Percentage of installations of Alstom designed air preheaters (including licensee installations)

With 90 years of air preheater experience, we have supplied thousands of air preheaters for power generation and industrial applications globally.

We combine our local presence with global knowledge and resources in order to deliver the technology and services which meet the demanding expectations of our customers around the world.

Global Alstom air preheater design installations (including licensees)

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Some of our Global leadership

USA 98%

MEA 70%

Europe 66%

India 90%

China 75%

LAM 75%

Japan 99%

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key APH reference sitesthrough global experience

SAUDI ARABIASaudi Electric CompanyShoaiba 1-1313 x 400 MW oil fired boilers26 x size 28 bi-sector APHStartup : 2002-2013

GERMANYEnBW Kraftwerke AGRDK81 x 912 MW coal fired boiler1 x size 36.5 quad-sector APHStartup : 2013

MALAYSIATNB JanamanjungManjung 41 x 1000 MW coal fired boilers2 x size 34.5 tri-sector APHStartup : 2015

JAPANChugoku Electric Power Co. IncShin Onoda 1&2 2 x 500 MW coal fired boilers 4 x size 30.5 tri-sector air preheatersComplicated and time-consuming maintenance on the existing Rothemuhle style air preheaters justified their replacement with new Ljungström® Air Preheaters selected to meet the specified performance with lower leakage levels and fit in the space occupied by the existing units.

MOROCCOJorf Lasfar Energy Company Jorf Lasfar 3&4 2 x 260 MW coal fired boilers 2 x size 31.5 tri-sector air preheatersFuel switches were creating an issue with pluggage, so a new heat transfer surface configuration using advanced loose-packed heating elements was installed, reducing the fouling rate while maintaining the efficiency of the air preheaters.

New equipment installations

Retrofit projects

MEXICOComisión Federal De Electricidad Tuxpan 3-6 4 x 350 MW oil fired boilers 8 x size 29.5 bi-sector air preheatersReplacement of the complete rotor and shaft to upgrade the heaters to double sealing and provide improved thermal efficiency. Advanced heat transfer profiles were used with enamelled heating element in the cold end.

How Alstom is helping you meet the challenges of energy sustainability.

REDUCING

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REDUCING COST OF ELECTRICITY

It takes competitive assets to keep electricity affordable. We enable power companies to compete successfully in the marketplace and provide affordable electricity to consumers. We help you reduce the cost of electricity through:

• Efficiency improvements• CAPEX reduction / scaling up• Capacity Factor increase (renewable)• Lead time reduction• Competitive O&M• Competitive financing

LOWERINGENVIRONMENTAL FOOTPRINT

Clean generation is one way of demonstrating environmental responsibility. Another is lowering resource usage, visual impact and noise pollution. In both cases, we can help you meet or exceed regulations and environmental standards. That is why Alstom innovates in the following areas:

• Renewable portfolio• Natural resource optimisation• Pollutants control

(SOx, NOx, PM, mercury)• CO2 emission reduction & CCS• Land use, visual impact and noise• Water intensity reduction &

recyclability

INCREASINGFLEXIBILITY & RELIABILITY

Intermittent power generationis a growing challenge of energy security, as is maintaining an aging installed base and adapting it to changing market conditions. We help you tackle both issues so that you can enjoy dependable operations with:

• Maintainability and outage time reduction

• Operational and fuel flexibility• Lifetime extension and power uplift• Designs and service for improved

availability and reliability• Climate packages• Energy storage

Rail transport

Electrical grid

Power generation

Alstom is a global leader in the world of power generation, power transmission and rail infrastructure and sets the benchmark for innovative and environmentally friendly technologies.

Alstom builds the fastest train and the highest capacity automated metro in the world, provides turnkey integrated power plant solutions and associated services for a wide variety of energy sources, including hydro, nuclear, gas, coal, wind, solar thermal, geothermal and ocean energies. Alstom offers a wide range of solutions for power transmission, with a focus on smart grids.

Alstom

Alstom Power offers solutions which allow their customers to generate reliable, competitive and eco-friendly power.

Alstom has the industry’s most comprehensive portfolio of thermal technologies – coal, gas, oil and nuclear – and holds leading positions in turnkey power plants, power generation services and air quality control systems. It is also a pioneer in carbon capture technologies.

Alstom offers the most comprehensive range of renewable power generation solutions today: hydro power, wind power, geothermal, biomass and solar. With ocean energies, we are developing solutions for tomorrow. Alstom is one of the world leaders in hydro power, the largest source of renewable energy on the planet.

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Alstom Power

Alstom BrazilAv. Independencia, 438513280-000, Vinhedo Sao PauloBrazilPhone: +55 19 3826 6767

Alstom China8F, One Indigo 20 Jiuxianqiao RoadChaoyang DistrictBeijing 1000016ChinaPhone: +86 10 5630 4000

Alstom Czech RepublicOlomoucka 7/9656 66 BrnoCzech RepublicPhone: +420 54510 2913

Alstom GermanyHaus WattBoveristrasse 2268309 MannheimGermanyPhone: +49 621 329 2100

Alstom IndiaTech Boulevard, Tower C 2nd Floor, Plot No. 6 Sector 127, Noida 201 301 Uttar PradeshIndiaPhone: +91 120 434 8056

Alstom Japan2-3-4 Minatojima-nakamachiKobe 650-0046JapanPhone: +81 78 303 5060

Alstom United States3020 Truax Road, WellsvilleNY 14895USAPhone: +1 585 593 2700

www.alstom.com