_ lng ready neptun ship design
DESCRIPTION
_ LNG ready Neptun Ship Design. LNG READY. _ LNG Experiences. 2009 – Design offer for a LNG- fuelled power plant – inquired by MAN. Ref . MAN. 2009/10 – I nvestigation to convert a conventional Ship Design to a gas fuelled one . Partners: MAN/GL. - PowerPoint PPT PresentationTRANSCRIPT
_Ship Design Aspects – LNG as Fuel
1 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG ready
Neptun Ship Design
LNG
READY
_Ship Design Aspects – LNG as Fuel
2 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG Experiences2009 – 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
_Ship Design Aspects – LNG as Fuel
3 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG cleanest option to fulfil MARPOL Annex VI
Ref. www.dieselnet.com
SOx ECA
1,5%
Date
Sul fur Limit in Fuel (% m/m)
Global
2000
2010.07
a - a l ternative date i s 2025, to be decided by a review in 2018
2015
2020a
4,5%
1,0%
0,1%
3,5%
0,5%
2012
Date n < 130 130 < n < 2000 n > 2000
Tier I 2000 17,0 45 x n- 0,2 9,8
Tier I I 2011 14,4 44 x n- 0,23 7,7
Tier I I I 2016a
3,4 9 x n- 0,2 1,96
Tier
a - a l ternative date i s 2025, to be decided by a review in 2018 - MEPC 65 proposed to postpone Tier I I s tandard to 2021
Nox Limit, g/kWh
LNG reduce (LNG as fuel ship)Greenhouse gas : 26%Particular matter (PM) : 100%Sulfur oxide (Sox) : 100%Nitrogen oxide (Nox) : 80-90% By converting from Fuel Oil to LNG, the above figures will be achieved
_Ship Design Aspects – LNG as Fuel
4 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG cloud or another Loop in Ship Design
LNG
North Sea
ECAMARPO
L Baltic Sea
North America
TIER II
TIER III
Main Engine
High PressureGas tank
4 stroke
Aftertreatment
Liquid fuel as second or as
back-up
Gas mode optimized
EGRSCR
Gas System
Gas prepare
Low Pressure
2 strokeCylindrical Prismatic
Vacuum
Gas transfer
Bunkering
Boil off
Safety 2nd barrier Inertizing
Blow off
Bursting discs
RulesIGF code
Class MSC.285(86)
_Ship Design Aspects – LNG as Fuel
5 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG how to start?
Main Design Criteria
Best Transport Efficiency (TE) for Intended Service
TE = ____________TEUhom x nm
FGC
Service – Transportation Task defined by Owners according real needs
_Ship Design Aspects – LNG as Fuel
6 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_Decision for Main EngineOtto cycle againstDiesel cycleLow pressure <10 barHigh pressure up to 300 bar4 stroke and 2 stroke 2 stroke
Pilot/ Liquid fuel1%
3-5%Amount of liquid fuel constant Amount of liquid fuel increase with
lower loadsOperating at all loads in gas mode At 15-20% load switch to
100% liquid fuelMaximum output
Optimized for gas operation Diesel engine operating on liquid fuel
and gasOperating with liquid fuel is lessefficient, just back-up onlyLower maximum outputSame maximum output like conven-
tional oneAftertreatment
Tier III in gas mode Tier III in gas mode by EGRTier III in liquid fuel mode by SCR Tier III in liquid fuel mode by EGRNo aftertreatment in gas modeAftertreatment in all modes
Methan slip2-4% of SFOC
0.1% of SFOCGas quality
Min. Methan Number of 80, No limits for methan numberwhich is near half of global supply
_Ship Design Aspects – LNG as Fuel
7 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_Decision for Main EngineThere still remains the question for the decision maker:Trust, Experiences, Better Marketing, Needs, Advantages?
_Ship Design Aspects – LNG as Fuel
8 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG Tank Arrangement
LNG storage tanks
Aluminum alloy
Aluminum alloy Stainless steel
IMO Type C
Cylindrical Double wall
Stainless steel (Outer: Carbon steel)
Cylindrical Single wall
IMO Type B (or A)
Spherical
Prismatic
Stainless steel
9% Nickel (incl. Bi-lobe shape)
Aluminum alloy
Normal capacity range per a tank
Normal design pressure range
0.2 - 1.0 MPaG
0.2 - 0.75 MPaG
0.025 - 0.07 MPaG
1 - 500 m³
1 - 500 m³
1,000 - 5,000m³
200 - 6,000 m³
10,000 - 60,000 m³
from up 800 m³
_Ship Design Aspects – LNG as Fuel
9 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_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
_Ship Design Aspects – LNG as Fuel
10 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG Tank Arrangement proposals
Advantage:- No loss of cargo space- Fits for later installation
Disadvantage:- Weight distribution aft- High COG
_Ship Design Aspects – LNG as Fuel
11 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG Tank Arrangement proposals
Advantage:- No loss of cargo space- Lower COG than proposal
before
Disadvantage:- Partially suitable for later
installation
_Ship Design Aspects – LNG as Fuel
12 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_LNG Tank Arrangement proposals
Advantage:- Best regarding COG and
weight distribution- Nearest to Engine room
Disadvantage:- Loss of cargo space- No later installation
_Ship Design Aspects – LNG as Fuel
13 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
_Development project for Hansa Shipping
LNG
READY
_Ship Design Aspects – LNG as Fuel
14 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
Loops of Ship Design Process
_Basic Design Requirements
Owners Requirements: technical specification, description of the vesseloperational profile
Class Requirements: construction rules LR, DNV, GL, BV …
Statutory Rule Requirements: IMO, SOLAS, MARPOLto consider: emission control areas heat recovery systemsEEDI - indexballast water treatment
Economic Requirements: minimized service costfuel oil efficiencyminimized constructioncost (Light ship weight),effective design process
_Ship Design Aspects – LNG as Fuel
15 Wärtsilä LNG in practice; Stockholm - ‘Viking Grace‘ 18.09.2013
The managing partners are: Mr. Gerald HadaschikMr. Helge SellMr. Stephan MerkelMr. Roland Gräber
Neptun Ship Design GmbH Kurt-Dunkelmann-Str. 4, Geb. 24718057 Rostock, GermanyPhone: +49 (0) 381 609 12-0Fax: i+49 (0) 381 609 [email protected]
www.neptun-germany.com
_Address