wartsila sp a tw energy efficiency b

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1.09 Twentyfour7. 55

TEXT: MONIKA WINQVIST

ILLUSTRATION: KLAUS WELP

CO-OPERATION

TO ACHIEVE

MAXIMUMENERGY

EFFICIENCY

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56 Twentyfour7. 1.09

A.P. MOLLER-MAERSK is one of the biggestplayers in international shipping with its headquartersin Copenhagen, Denmark and offices in more than

130 countries. According to Ivan Seistrup, Group VicePresident, Maersk Line, the dialogue between Wrtsil andA. P. Moller-Maersk has been honest and very professional.Maersk Line transportation segment deals with almost everyaspect of container shipping: from the global transportationof containers to loading and off loading in port as wellas helping customers to plan the most effi cient ways totransport their goods.

Environmental issues in focus.A. P. Moller-Maersk hasbeen at the forefront in environmental issues for manyyears. Maersk Lines intermediate target is a 10% reductionin CO

2emissions by 2012. Achieving this means that fuel

consumption will have to be cut. By using less fuel we

achieve two things at the same time, says Seistrup. Onone hand we reduce costs, on the other the lower quantityof fuel consumed reduces the environmental impact ofemissions such as CO

2, SO

X, NO

Xand particulate matter

(PM).Te shipping of containers benefits from a good starting

point as regards energy consumption. Compared to airfreight, trucking and transportation by train, ships emitsubstantially less CO

2per ton of goods transported.

Pushing a vessel through the waves takes less energythan other modes of transport, and this fact, combined

Improving the overall quality

o vessels requires

proessional and wholehearted co-operation

between shipowners and

suppliers. Only through such

close co-operation can ships

that eature maximum levels

o energy ef ciency be

achieved and the resulting

reductions in both uel

consumption and emissions.

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with the amount of cargo which can be moved in asingle shipment, means that the more that goods aretransported by sea, the better for the environment andfor the climate, says Seistrup.

Improvement through research. Te rule of thumbis that the larger the vessel, the less fuel it consumesper transported unit. Te new PS-type vessels set newstandards for energy efficiency on container vessels.Compared to mid-size vessels, emissions by EmmaMrsk are 30% lower per transported ton.

Even so, there is room for further improvementregarding the CO

2, SO

X, NO

Xand PM emitted by

vessels. Research and development in all areas thataffect fuel consumption is the route to minimizingemissions. o step up R&D of this type, A. P. Moller-Maersk established an innovation department in itsechnical Organization in 2007.

Tis department is unique, because shippingcompanies have not traditionally had any departmentsfocusing on innovation, says Seistrup. Our project listcurrently features more than 100 different undertakings,all of them targeting reductions in fuel consumptionand emissions by our vessel operations.

Te list includes initiatives such as the optimizationof pump and ventilation systems, the developmentof optimal docking programs, electronically-controlled engines, optimizing trim, route planning,unconventional propeller designs, innovative

propulsion systems and hull optimization.Projects judged to be realistic are tested using

models or a prototype. Tis is where Wrtsilsexpertise steps in. In the testing phase, we cannot

act alone, says Seistrup. Reliable results can onlybe obtained by carrying out field tests on board ourvessels. Wrtsil is a systems expert. Our role is tosupply the vessels and our experience in operatingthem.

Partnership plays a key role. Te importance ofthis type of partnership needs to be underlined, hesays. We discuss the different options for reducingemissions in different working groups - and Wrtsilhas already proposed a large number of initiativesrelating to environmental issues.

One area in which our co-operation with Wrtsilhas achieved very good results is in installing Waste

Heat Recovery Systems (WHRS) on our vessels, saysSeistrup. In WHRS, a boiler located in the vesselsfunnel uses heat from the exhaust gases to generatesteam. WHRS has provided us with considerablebenefits. On our E-class vessels, savings in fuel oil havereached an impressive 10%.

Significant improvements in environmentalperformance would be achieved by installing suchsystems in all newbuildings. o date, most shipyardshave not been capable of installing WHRS technology ata cost that justifies its implementation. Unfortunately,

THE MORE THAT

GOODS ARETRANSPORTED

BY SEA, THE

BETTER FOR THE

ENVIRONMENT.

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solution

THE NEED FOR VESSELS

THAT ARE EVEN MOREENVIRONMENTALLY SOUND

IS QUITE CLEAR.

A FOCUS ON TECHNICALEXPERIENCE

ACCORDING TO KRISTOFFER BUHL LARSEN,

technical co-operation between Wrtsil and

A. P. Moller - Maersk (APMM) has been bothlong-term and comprehensive. Now directed by

a Technical Steering Committee, co-operative

activity really took of with the introduction

o RT-flex engines and Waste Heat Recovery

(WHR) systems in the APMM fleet. Among

other significant achievements, this resulted in

Wrtsil supplying the worlds largest engines

(the 14RT-flex) and implementation o the

most ecient WHR systems installed to date

(achieving uel savings o more than 10%).

HEADED BY MR SEISTRUP, members o the

Technical Steering Committee come rom

technical management personnel in both

companies. Several joint technical working

groups handling a liated projects also

report to the Technical Steering Committee.

These include an Innovation Workgroup

(Implementation o GreenTech technologies),

an RT-flex Workgroup (Optimization o RT-flex

engine perormance and the implementation o

new solutions), and a Wrtsil 50DF Workgroup

(Optimization o the Wrtsil 50DF engine and

its operational perormance).

THE EMPHASIS IN THIS SUCCESSFUL CO-

OPERATION has developed rom being a orum

with a ocus on operational and technical

experiences related to Wrtsil RT-flexengines. The relationship is now very proactive,

concentrating on the implementation o RT-

flex solutions, operational optimization and

environmental solutions. This structured,

project-oriented approach is currently being

expanded to include cross-unctional

co-operation with APMM that involves all

o the companys business units.

58 Twentyfour7. 1.09

many shipyards are very conservative. Convincing them that theyshould modernize their products requires a great deal of effort.

On the other hand, shipyards in the Far East now appear tobe interested in adopting WHRS. Im convinced that interestin such systems will increase and that in the future, it will bea solution applicable not only to container ships and large vessels,but also to smaller vessels, tankers and car carriers.

Constant monitoring.A reliable method of ensuring efficientoperation and optimized fuel consumption is through performancemonitoring. All our container vessels, tankers and car carriersare monitored on a daily basis using a very detailed performancesystem that enables inefficiencies to be corrected, says Seistrup.Any discrepancies from a vessels expected performance areinvestigated to ensure that each ship is operated in the mostoptimal possible way.

One such indicator is a vessels speed percentage - a way ofcomparing its performance to what it was when it was new. Ifthe speed percentage drops by only a few percentage points,fuel consumption can rise by as much as three times. A crucialfactor affecting speed percentage is the cleanness of the shipshull. Applying anti-fouling paint limits the growth of microorganisms, reducing the adverse effect these can have.

Choosing the right anti-fouling paint is extremely important,says Seistrup. Currently we use silicon and silyl-acrylate self-polishing paints. Although the latter type is toxic, it keeps thehull very clean, and both fuel consumption and emissions are ata lower level. It is therefore more environmentally sound in thelong run.

Future ships and shipping. Seistrup is positive about shippingsfuture. He expects increased traffic congestion on land to make

waterborne transportation increasingly interesting even overshorter distances. But the need for vessels that are even moreenvironmentally sound is quite clear.

Ship design will become even more important in the future,he says. Te tools we have for designing ships are muchimproved. We have to take a more intelligent look at hulls,propellers and propeller speeds. But both ships and shipping arenot only machines and systems - they are also about the peoplethat run them.

Another important area we have to concentrate on in thefuture is making onboard equipment more user-friendly, morereliable and easier to maintain. Carrying out maintenance tasksduring normal operation is something we want to avoid as the

risk of encountering problems is always higher.We are very interested in further co-operation with Wrtsil

on this, says Seistrup. Higher prices resulting from employingmore expensive materials could even be acceptable if levels ofreliability are higher and the periods between overhauls can beextended.

wartsila sp a tw energy efficiency b

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