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_Ship Design Aspects – LNG as Fuel 1 Wärtsilä LNG in practice; Stockholm - Viking Grace 18.09.2013 _LNG ready Neptun Ship Design LNG READY.

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Presentation on theme: "_Ship Design Aspects – LNG as Fuel 1 Wärtsilä LNG in practice; Stockholm - Viking Grace 18.09.2013 _LNG ready Neptun Ship Design LNG READY."— Presentation transcript:

1 _Ship Design Aspects – LNG as Fuel 1 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG ready Neptun Ship Design LNG READY

2 _Ship Design Aspects – LNG as Fuel 2 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Experiences 2009 – Design offer for a LNG-fuelled power plant – inquired by MAN Today All new designs with different levels of pre-outfitting for LNG 2009/10 – Investigation to convert a conventional Ship Design to a gas fuelled one. Partners: MAN/GL Ref. MAN 2012 – R&D Project – Power Generation Concept for a LNG-Storage and Production Offshore Platform Ref. Siemens 2011/13 – Design for a Gas Fuelled Feeder Container Vessel. Approval in Principle by DNV Partner: Hansa Shipping

3 _Ship Design Aspects – LNG as Fuel 3 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG cleanest option to fulfil MARPOL Annex VI Ref.

4 _Ship Design Aspects – LNG as Fuel 4 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG cloud or another Loop in Ship Design LNG North Sea ECA MARPOL Baltic Sea North America TIER II TIER III Main Engine High Pressure Gas tank 4 stroke Aftertreatment Liquid fuel as second or as back-up Gas mode optimized EGRSCR Gas System Gas prepare Low Pressure 2 stroke Cylindrical Prismatic Vacuum Gas transfer Bunkering Boil off Safety 2nd barrier Inertizing Blow off Bursting discs Rules IGF code Class MSC.285(86)

5 _Ship Design Aspects – LNG as Fuel 5 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG how to start? Main Design Criteria Best Transport Efficiency (TE) for Intended Service TE = ____________ TEU hom x nm FGCFGC Service – Transportation Task defined by Owners according real needs

6 _Ship Design Aspects – LNG as Fuel 6 Wärtsilä LNG in practice; Stockholm - Viking Grace _Decision for Main Engine Otto cycleagainstDiesel cycle Low pressure <10 barHigh pressure up to 300 bar 4 stroke and 2 stroke2 stroke Pilot/ Liquid fuel 1%3-5% Amount of liquid fuel constantAmount of liquid fuel increase with lower loads Operating at all loads in gas modeAt 15-20% load switch to 100% liquid fuel Maximum output Optimized for gas operationDiesel engine operating on liquid fuel and gas Operating with liquid fuel is less efficient, just back-up only Lower maximum outputSame maximum output like conven- tional one Aftertreatment Tier III in gas modeTier III in gas mode by EGR Tier III in liquid fuel mode by SCRTier III in liquid fuel mode by EGR No aftertreatment in gas modeAftertreatment in all modes Methan slip 2-4% of SFOC0.1% of SFOC Gas quality Min. Methan Number of 80,No limits for methan number which is near half of global supply

7 _Ship Design Aspects – LNG as Fuel 7 Wärtsilä LNG in practice; Stockholm - Viking Grace _Decision for Main Engine There still remains the question for the decision maker: Trust, Experiences, Better Marketing, Needs, Advantages?

8 _Ship Design Aspects – LNG as Fuel 8 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Tank Arrangement LNG storage tanks

9 _Ship Design Aspects – LNG as Fuel 9 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Tank Arrangement Challenge of Compromise FactsRiskTarget Substitute of liquid fuel bunker without any losses Loss of space, dead- weight, stability 3.5-fold space requirement against liquid fuel for C- Tanks and 2.5 for B- Tanks

10 _Ship Design Aspects – LNG as Fuel 10 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Tank Arrangement proposals Advantage: -No loss of cargo space -Fits for later installation Disadvantage: -Weight distribution aft -High COG

11 _Ship Design Aspects – LNG as Fuel 11 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Tank Arrangement proposals Advantage: -No loss of cargo space -Lower COG than proposal before Disadvantage: -Partially suitable for later installation

12 _Ship Design Aspects – LNG as Fuel 12 Wärtsilä LNG in practice; Stockholm - Viking Grace _LNG Tank Arrangement proposals Advantage: -Best regarding COG and weight distribution -Nearest to Engine room Disadvantage: -Loss of cargo space -No later installation

13 _Ship Design Aspects – LNG as Fuel 13 Wärtsilä LNG in practice; Stockholm - Viking Grace _ Development project for Hansa Shipping LNG READY

14 _Ship Design Aspects – LNG as Fuel 14 Wärtsilä LNG in practice; Stockholm - Viking Grace Loops of Ship Design Process _Basic Design Requirements Owners Requirements:technical specification, description of the vessel operational profile Class Requirements:construction rules LR, DNV, GL, BV … Statutory Rule Requirements:IMO, SOLAS, MARPOL to consider: emission control areas heat recovery systems EEDI - index ballast water treatment Economic Requirements:minimized service cost fuel oil efficiency minimized construction cost (Light ship weight), effective design process

15 _Ship Design Aspects – LNG as Fuel 15 Wärtsilä LNG in practice; Stockholm - Viking Grace The managing partners are: Mr. Gerald Hadaschik Mr. Helge Sell Mr. Stephan Merkel Mr. Roland Gräber Neptun Ship Design GmbH Kurt-Dunkelmann-Str. 4, Geb Rostock, Germany Phone: +49 (0) Fax: i+49 (0) _Address


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