Matchless in every degree

Plate heat exchangers for marine applications

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Whether you build ships or operate them, Alfa Lavalcan provide you with top-notch solutions that coveryour onboard needs – from fuel treatment to waterdesalination.

Our plate heat exchangers, for example, handleapplications both inside and outside the engine room.Thanks to innovative design and expert manufacture,they excel in the most demanding environments.

Best of all, our plate heat exchangers combinetechnology with economy. They give you remarkablelifetime performance, but at a price lower than youmight expect.

This brochure will show you how.

Plate heat exchangers for marine applications

Alfa Laval on board

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The price of plate heat exchangers has actually dropped over the past 25 years.

This is not a coincidence, but rather the outcome of Alfa Laval’s ongoing push

for development. Today, as a result of our cost-cutting innovation, you receive a

highly advanced product at a very competitive price.

Dedicated efficiencyAlfa Laval is the clear leader in the de-velopment of plate heat exchangers, orPHEs. With an extensive R&D programdedicated to thermal products, we deliverstate-of-the-art equipment at progres-sively lower prices.

Our innovations throughout the years, forexample the herringbone pattern or thetitanium plate, have let us create smallerplate packs that handle an equivalentheat load. This has reduced material andmanufacturing costs – at a sizeablesavings to you.

One step to greater savingsOnly Alfa Laval uses a one-step tech-nique for pressing all plate sizes, whichreduces material stress and createsexcellent heat transfer properties. Platespressed in this manner handle shocks,vibrations and high operating pressures,but they do so without sacrificing heatefficiency. Moreover, the one-stepmethod yields comparable strengthwith a much thinner plate – as thin as0.4 mm for titanium and stainless steel.

Distributing benefitsAnother advance is our distribution area,the “chocolate” pattern on the platethat enables parallel flow. When flow isparallel, the same type of plate can beused throughout the pack, with alternateplates rotated 180º. This makes foreasier assembly than plates with diago-nal flow, since there is no need to sortor keep track of different plate types.

Besides simplifying assembly, the distri-bution area creates an even flow overthe whole plate surface. No dead spotsare created, which means fouling is keptto a minimum. This leads to more effi-cient heat transfer, with fewer platesneeded as a result.

Sealing out costsAdded to our plate expertise are seven-ty years of working with gaskets. Whileother suppliers buy third-party prod-ucts, Alfa Laval has a dedicated unit forgasket development. Our gaskets can

last years longer than the market aver-age, providing high reliability at a lowerlife cycle cost.

On task and on handThe expertise behind our innovationscarries over into our dealings with ship-yards. Many of our employees havefirsthand experience in the yard business,which means they understand its com-plex needs and drivers.

Alfa Laval has a large local organizationwith qualified support in your local lan-guage. In addition to several sites inEurope, we have sites in China, Koreaand Japan. In fact, we are the only supplier with local production in everymajor market, which means more accu-rate deliveries and a flexible supply. By dedicating expert resources to youryard and its needs, we give you strengthand confidence in serving your cus-tomers.

InnovationAffordable

Cost reduction through innovation

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Setting the trendOver the years, shipbuilders and ship operators haveseen a steady reduction in the price of PHEs. This isthe result of technical development, led by Alfa Laval.

Built at Samsung Shipyard, South Korea, each of the eight 7700 TEU container vessels

uses the following Alfa Laval PHE products:

3 x M30 for central cooling3 x M30 for lube oil cooling

2 x M15 for turbo charge cooling2 x M6 for stern tube cooling

1 x Engard

A preciseadvantageDealing with heat and cold is a precision business. The slightest change in

a heat exchanger plate can have tremendous effects on thermal dynamics

and flow. This is why Alfa Laval ensures unsurpassed precision – not only in

our plates, but in our whole manufacturing process.

Keeping it all in lineBetter alignment creates a compact,leak-free PHE. This is why, for example,our openable PHEs are fitted with a five-point alignment system, which holds theplates both horizontally and vertically.

Alfa Laval’s one-step technique forpressing plates creates optimal alignmentproperties, no matter what the type ofPHE or the size of the plate. While multi-ple pressings add strain, causing weak-ness and faults, the one-step methodyields a well-formed plate with muchbetter tolerance. Each plate is checked asit comes off the press, with an ultravioletscan to find the smallest imperfection.

For absolute certainty, all assembledPHEs are pressure tested to reveal theslightest leakage. Precision alignment is therefore assured, from the time ofpurchase through years of use andmaintenance.

An exacting processThe effort and care in our pressingprocess can be seen in more than ourplates. Alfa Laval’s exact way of workingaffects every aspect of PHE manufacture.

All steps in production can be tracked,thanks to a detailed numbering system.Each plate receives a unique ID, and eachtesting instrument and pressure flange isalso numbered. This leads to unparalleledtraceability throughout the manufacturingprocess.

Moreover, the attention given to ourplates is also given to the sealing. By developing specialized gaskets, glues,and new methods of welding and brazing,we ensure seals that go the distance.Each one is highly durable – and preciselymatched to the needs of the application.

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Plate heat exchangers for marine applications

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With a compact design and unmatchable thermal

characteristics, Alfa Laval plate heat exchangers

are a clear choice for the engine room and beyond.

Their many advantages apply to a wide range

of applications on board.

In the

Lubricating oil coolingThe Lubricating Oil Cooler (LOC) removes heatfrom lubricating oil after it has passed throughthe engine. Oil is pumped via a filter to the pis-tons, bearings, and crosshead, and also to thecamshaft system in the case of a four-strokeengine. Once through the engine, the oil is col-lected in the oil pan, from which it drains backinto the bottom tank (dry sump) or crankcase(wet sump).

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engineroomand throughout the ship

General oil heatingIn fuel and lube oil cleaning processes, the oilmust be heated to the required temperaturebefore entering the centrifugal separator. Thisensures an optimum separation effect. In addi-tion, it is necessary for fuel to be pre-heatedbefore it can be injected into the diesel engine.

Central coolingThe Central Cooler (CC) removes heat from thecentral cooling system. Heat is generally takenfrom the Jacket Water Cooler, Lubricating OilCooler and Scavenge Air Cooler, as well theauxiliary engines and ancillary equipment. Freshwater is drawn through the CC by pumps andmixed in a regulating valve to ensure a constanttemperature in the system.

RefrigerationA refrigerant condenser and evaporator areinstalled in refrigerant cooling systems, such asthose found on “reefers”, fishing ships or shipswith air conditioning. The hot refrigerant entersthe condenser, where it is condensed by meansof seawater. It is then led to the receiver, fromwhich it runs through an expansion valve andenters an evaporator. This evaporator can beeither a liquid/air system or a liquid/liquid sys-tem (chiller).

Plate heat exchangers for marine applications

Steam heating and condensingThe Steam Condenser/Dumping Condenser(DUC) condenses the surplus steam producedin steam generating systems, e.g. an exhaustgas boiler. Steam is fed into the DUC througha pressure-controlled overflow valve, whichcontrols the steam pressure in the steamgenerating system.

Jacket water coolingThe Jacket Water Cooler (JWC) removes heatfrom the cylinder liners, cylinder covers andexhaust valves. Cooling water is pumped fromthe engine outlet to the JWC, from which thecooling water returns to the engine. A regu-lating valve at the outlet of the JWC keeps thecooling water from the engine outlet at a fixedtemperature, based on information from anengine cooling water sensor

Gas condensationThe LPG (Liquid Petroleum Gas) condenser isused to condense cargo vapour and return it tothe cargo tank. This is necessary because thegas, compressed into a liquid during transport,evaporates when heated by external factorssuch as air, water and sun. Evaporated gas issucked from the top of the cargo tank andcompressed by a compressor, after which it iscondensed in the LPG condenser.

Tank cleaning water heatingThe Tank Cleaning Heater (TCH) heats the freshwater or seawater used in cleaning the tanks ofproduct and chemical tankers. The water ispumped to the heater, which uses steam orthermal oil from a boiler as a heat source.Steam enters the TCH through a regulatingvalve and leaves as condensate, returning tothe steam/feed water system. The heatedwater is then pumped through piping to thewashing machines on deck.

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Volatile Organic CompoundThe Volatile Organic Compound (VOC) recov-ery plant handles the large quantities of VOCgases produced during the handling and trans-port of crude oil. Traditionally, VOC gases havebeen vented into the atmosphere, which repre-sents both a loss of energy and an environ-mental threat. In a VOC recovery plant, thesegases are purified and liquefied to serve as fuelfor the onboard engines or boilers, or to bereinjected into the crude oil tanks. Alfa LavalPHEs are used in the plant’s condensation andcooling stages.

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G: Gasket PHE A: AlfaRex F: AlfaNova W: Semi-Welded B: Brazed

ApplicationsCentral cooler G G G G G G G G G GME JWC G G G G G G G G G GME JWH G G G G G G G G G GME LOC G G G G G G G G G GME Camshaft LOC G G G G G G G G G GAE JWC G G G G G G G G G GAE LOC G G G G G G G G G GStern Tube Oil Cooler G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BCP Propeller Oil Cooler G/F/B – G/F/B – – G/F/B – G/F/B G/F/B G/F/BGear Oil Cooler G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BCargo Heater – – A/F/W/G A/F/W/G A/F/W/G A/F/W/G – – – –Gas Condenser – – – – – A/W/F – – – –VOC – – – A/F/B A/F/B – – – – –Tank Cleaning Heater – – G – G – – – – –Steam Generator – – G – G – – G – –Dumping Condenser G G G G G G G G G GDrain Cooler G G G G G G G G G GFWG booster G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BHydraulic Oil Cooler G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BCompressor Cooler G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BCondenser (ref. plant) – – – – – – – W W WChiller (ref. plant) – – – – – – – W W WComp oil cooler (ref.) – – – – – – – W W WFresh Water Heater G G G G G G G G G GAir conditioning cooler G G G G G G G G G GMineral Oil Sep Preheater G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/B G/F/BFCS Heater G/F G/F G/F G/F G/F G/F G/F G/F G/F G/FComfort Heating G/B G/B G/B G/B G/B G/B G/B G/B G/B G/B

Type of ship

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While they form the largest part of our heat exchanger business, gasketed plate

heat exchangers from Alfa Laval are anything but common. From their unique

five-point alignment system to their advanced gasket materials, they combine

flexibility and performance with a low life cycle cost.

Accessible benefitsLike all Alfa Laval PHEs, our gasketedmodels contain single-pressed plateswhose design and material can be cus-tomized to suit a wide range of applica-tions. In addition, they open easily forinspection and maintenance.

Using a unique five-point alignment system, our gasketed PHEs retain theirprecise alignment through multipleopenings and closings. The system’scarrying and holding bars secure bothhorizontally and vertically, ensuring areliable seal throughout the plate pack.

Advantage by designThe gaskets in our PHEs derive from 70 years of experience and in-housedevelopment. They are available in awide range of materials, all of whichhave been carefully designed to meetapplication demands.

Gaskets are moulded in a single piece,which gives them an exact geometrythat avoids vulcanization weak spots.And in the unlikely event of a gasketfailure, their double sealing system prevents cross-contamination, thanks tospecial venting ports that route leakageoutside the plate pack.

Most importantly, Alfa Laval gaskets last up to several years longer than theindustry average. This increase in gasketlifetime means a huge reduction in lifecycle cost.

Suited to the taskThe design of Alfa Laval gaskets strikesa unique balance between performanceand ease of use. In most cases gasketscan be clipped on, which offers greatadvantages for the user when cleaningor assembling the unit.

Clip-on gaskets have advantages athigher temperatures, since they sit betterwhen heated and will not slide or pinch.

But in other applications, where clip-ongaskets become unmanageable orwhere duties cause gaskets to swell, aspecial gluing technique is preferred.Alfa Laval’s two-component oven-curedepoxy provides unsurpassable adhesion,even in high-pressure duties.

ApplicationsGasketed PHEs are suited to a widerange of onboard applications, including:

Central coolingLubricating oil coolingJacket water coolingSteam heating and condensingGeneral oil cooling/heating dutiesGeneral water heatingTank cleaning heatingCargo heating

exchangersGasketed plate heat

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Gasketed plate heat exchangers are a major presence aboard most ships,

especially for use in central cooling with seawater. In this and other applications,

the following products can provide useful advantages.

productsRelated

Plate heat exchangers for marine applications

ALF – Automatic backflushing seawater filterEasy to install and service, the ALF filterprevents clogging and increases reliability.It features an automatic self-cleaningprocess, which removes collecteddebris without disrupting the liquid flow.Besides having a low flushing pressureand pressure drop, the ALF filter offersgood corrosion resistance and requiresno extra pump capacity.

Port filterThe Alfa Laval port filter is a protectionstrainer installed in the seawater inletport of the PHE. A cost-effective solu-tion for preventing clogging, it allowsmaintenance from the pressure plateside of the PHE without dismantling ofthe inlet pipework.

Instrument flangeThe Alfa Laval instrument flange fittingmakes it possible to monitor the inletand outlet operating conditions of thePHE. Venting and drain valves can bemounted if required.

Plate heat exchangers have many advantages over the older shell-and-tube design. Above all, they reducemaintenance and require up to 80% less space thanshell-and-tube constructions. But this is not all. They also lower operating costs thanks to their highly efficient heat transfer.

PHEs – a savings in themselves

In addition to our gasketed models, Alfa Laval offers a wide range of other plate

heat exchangers that handle even the toughest conditions. With several series

to choose from, we make it easy to meet your application demands.

Fully welded – AlfaRexCompact and thermally effective, AlfaRexPHEs feature a closed construction witha fully welded seal. Their gasket-freedesign makes them ideal for use withaggressive media and in duties involvinghigh temperature and pressure.

AlfaRex PHEs are laser-welded in onlytwo dimensions, with bellows connec-tions that increase fatigue resistance. In addition, our low-impact weldingtechnique requires 75% less heat, which

reduces the heat-affected zones on theplate. The end result is a durable PHE,able to handle temperatures from -50°Cto +350°C and pressures up to 40 bar.

Applications:Gas condensationEvaporation of clean fluidsRefrigerationCargo heating liquidGeneral heating/cooling with high pressures or temperatures

exchangersOther plate heat

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Semi-welded Developed for refrigeration and air con-ditioning applications, our semi-weldedPHEs combine the flexibility and service-ability of gasketed PHEs with the abilityto handle aggressive media and operating

characteristics of welded PHEs.

Semi-welded PHEs are small and lightweight, requiring a low amount ofrefrigerant filling. Moreover, they haveno pressure-retaining welds and are notsensitive to pressure shocks or vibration.Their robust design handles tempera-tures from -45°C to +160°C, as well aspressures up to 25 bar.

Applications:RefrigerationAir conditioningEvaporation and condensationLiquid and oil cooling

Plate heat exchangers for marine applications

Copper brazedPerforming as well as traditional installa-tions three times as large, our brazedPHEs provide compact stability at acomparatively low price. Their gasket-free design allows work with aggressivemedia, while their frameless constructionreduces size and weight.

Either copper or nickel can be used forthe brazing, which creates a tough andthorough seal. Brazed PHEs can there-fore handle temperatures from -160°Cto +225°C, as well as pressures fromfull vacuum to 32 bar.

Applications:Mineral oil heatingGeneral water heatingRefrigeration

Fusion brazed – Alfa Nova Alfa Laval was the first to braze PHEs,and our innovation continues with theintroduction of patented AlfaFusionbrazing. Our fusion-brazed Alfa NovaPHEs feature plates and brazing in 100%stainless steel, which allows excellentpressure fatigue resistance and can handle temperatures as high as +550°C.

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More than just a supplier, Alfa Laval works hard to bring you true peace of mind.

Not only do we deliver standard spare parts within 24-48 hours, we provide

the service and equipment necessary to ensure Nonstop Performance from your

plate heat exchangers.

Supportin every detail

Always at your sideNo matter where you find yourself, Alfa Laval is nearby. With our world-wide facilities and local presence, weprovide fast delivery and qualified sup-port in your own language.

When it comes to PHEs, we have 30service centres aiding customers in100 countries. And since many of ourrepresentatives have shipyard experi-ence, we understand the needs of

builders as well as operators. This meansthat we can suggest a wide range ofcost-saving alternatives, both for new-builds and for ships already in service.

New life for used productsAmong our many services is recondi-tioning, which involves much more thangasket replacement. After a detailed in-spection and needs assessment, weremove gaskets, clean and repair plates,

apply new gaskets and perform a finalpressure test.

We recondition half a million plates eachyear, and all of them receive a good-as-new guarantee. Moreover, we handleother makes of PHE, reconditioning themthrough our comprehensive AllBrandsservice. This makes Alfa Laval a singlesupplier for all of your PHEs – and atrue provider of Nonstop Performance

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Cleaning-In-PlaceOur Parts & Service team providesproducts that help to keep you self-sufficient. The Cleaning-in-Place (CIP)system allows you to clean your PHEswithout having to open them. Hookedup to the PHE inlets, it circulates achemical agent within the PHE thateasily dissolves fouling and microorga-nisms. Not only does this minimizedowntime, it is also a cost-effective

way of increasing PHE lifetime. Alfa Laval offers the ALPACON rangeof high-performance, environmentallyfriendly chemicals for both PHEdescaling and general degreasingduties.

Tightening deviceAlfa Laval’s universal pneumatic tight-ening device is ideal for opening andclosing PHEs with ease and efficiency.Available in single and double models,it makes maintenance safer and pro-tects the PHE equipment and bolts,prolonging their working life. The sametool can be used with all bolt sizes.

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Plate heat exchangers for marine applications

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for marine applications

Gasketed Plate Heat Exchangers

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Model M3 M6 M6M TS6M M10M M10B M15B M15MHeight,H,(mm) 480 920 920 704 1084 1084 1885 1885Width, W,(mm) 180 320 320 400 470 470 650 650Vertical Connection, VC, (mm) 357 640 640 380 719 719 1294 1294Horizontal Connection, HC (mm) 60 140 140 203 225 225 298 298Connection Size,flange, DN 25/32 50 50 65 100 100 150 150

Model TS20M T20M MX25B MX25M M30 MA30

Height,H,(mm) 1405 2100 2595 2595 2882 2882

Width, W,(mm) 800 780 920 920 1150 1170

Vertical Connection, VC, (mm) 698 1478 1939 1939 1842 1811

Horizontal Connection, HC (mm) 363 353 439 439 596 561

Connection Size,flange, DN 200 200 200/250 200/250 300/350 300/350

Frames PlatesDesign Pressure bar 10, 16 Material AISI304, AISI316, TitaniumMax Temp. °C 0 - 180 Thickness mm 0.4 , 0.45 , 0.5 , 0,6

GasketsMaterial NBRB, NBRP HNBR EPDM HeatSealFMax Temp. °C 95 130 160 160 180

Semi Welded Plate Heat Exchangers

Model M6BW M10BW MK15BW T20MW M20BW MA30MW Height,H,(mm) 920 1045 1486 2165 2260 2882Width, W,(mm) 320 470 650 780 780 1170Vertical Connection, VC, (mm) 640 719 1044 1478 1478 1811Horizontal Connection, HC (mm) 140 225 298 353 353 561Connection Size,flange, DN 60 100 150 200 200 300/350Flow principle Paralell Paralell Paralell Paralell Paralell Paralell

Frames PlatesDesign Pressure bar 10, 16, 25 Material AISI316, TitaniumMax Temp. °C 0 - 180 Thickness mm 0.5 , 0,6, 0,7

GasketsMaterial NBRP HNBR EPDMC FKMGMax Temp. °C 130 160 160 130

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Copper Brazed Plate Heat Exchangers

Model CBM 26-20 26-40 26-60 26-80 76-20 76-40 76-60 76-80Height,H, (mm) 400 400 400 400 700 700 700 700Width, W, (mm) 240 240 240 240 320 320 320 320Length, A, (mm) 160 160 260 260 190 190 310 310Vertical Connection, VC, (mm) 250 250 250 250 371 371 371 371Horizontal Connection, HC (mm) 52 52 52 52 92 92 92 92Connection Size,flange, DN 25 25 25 25 40 40 40 40

Frames PlatesDesign Pressure bar 16 Material AISI316Max Temp. °C 225 Thickness mm 0.4

Max Temp. degree 220 Brazing Material Copper

Fusion Brazed Plate Heat Exchangers

Model NSH 76-20 76-40 76-60 76-80Height, H (mm) 760 760 760 760Width, W (mm) 192 1920 192 192Length, A (mm) 71 128 185 242Vertical Connection, VC (mm) 519 519 519 519Horizontal Connection, HC (mm) 92 92 92 92Connection Size,flange, DN 54 54 54 54

Frames Design Pressure bar 28/23Max Temp. °C 100/225

PlatesMaterial AISI316Fusion Filler AISI316

Max Temp. degree 22

Welded Plate Heat Exchangers

Model TM10 TM20Height,H, (mm) 1200 2040Width, W, (mm) 470 915Vertical Connection, VC, (mm) 818 1427Horizontal Connection, HC (mm) 180 414Connection Size,flange, DN 100 200Flow principle Paralell Paralell

Frames TM10-FG TM10-FT TM20-FFDesign Pressure bar 20/16/14 43/35/30 26/22/20Max Temp. °C 200/300/350 200/300/350 200/300/350

PlatesMaterial AISI316, TitaniumThickness mm 0,6, 0,8

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Alfa Laval in brief

Alfa Laval is a leading global provider of specialized products and engineeredsolutions.

Our equipment, systems and servicesare dedicated to helping customers tooptimize the performance of theirprocesses. Time and time again.

We help our customers to heat, cool,separate and transport products suchas oil, water, chemicals, beverages,foodstuff, starch and pharmaceuticals.

Our worldwide organization works closelywith customers in almost 100 countriesto help them stay ahead.

How to contact Alfa Laval

Up-to-date Alfa Laval contact details for all countries are always available onour website at www.alfalaval.com

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