3 lngc propulsion_technical 4860df (customer print)
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2005/12/16© MAN B&W Diesel AG.
48/60 DF EngineThe New Prime Mover For LNG Carriers
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF: The New Prime Mover for LNG Carriers 30 min
The Dual-Fuel Electric Concept
Proven Technology: 32/40 DF References
48/60 DF – Main Technical Characteristics & Time Schedule
CONTENTS
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
~~
~~
Boil-off gasoxidiser
NBOG + Forced VaporisedLNG
MDOPilot andBack-Up Fuel
Engine room 1
Engine room 2
10 MW
10 MW
10 MW
10 MW
Dual-Fuel Electric Propulsion
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Dual-Fuel Electric LNG Carrier Propulsion
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Dual-Fuel Electric LNG Carrier Propulsion
Decreased Fuel Cost per Calory for Charterer with LNG
~ 50% Improvement of Propulsion System Efficiency Compared to S.T.
~ 3% Higher LNG Cargo Capacity than S.T. ( Increased LNGDel)
Cargo Bunkering = Fuel Bunkering Easy Logistics, No Time Loss INC
REA
SED
PRO
FITS
Environment Friendly (NOx < 1,5 g/kWh; CO2 ↓; No SOx; No Particles) Green Ship
Improved Flexibility & Efficiency at Part Loads (Multi-Engine Plant)
Underway Maintenance Possibility Without Adverse Effect on Ship‘s Schedule
Simple System with One Engine Type (48/60DF) Only for All the Ship‘s Power Needs
Low Pressure Gas Fuel Supply (5 – 6 bar) Safety Aspect
Gas/HFO Fuel Flexibility (if requested) in Steps due to Multi-Engine Configuration
Last But Not Least: Equivalent Redundancy / Reliability to Steam Turbine Plant !!
THE ADVANTAGES:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Dual-Fuel Electric LNG Carrier Propulsion
THE DRAWBACKS:
Overall Investment Costs difficult to assess:Ship prices depend heavily on market situation and portfolio strategy of the yard.
Larger Number of Cylinders Unusual for LNGC Operators,(though very common e.g. on cruise liners)
DF vs S.T. Plant Maintenance Costs?
Influ
ence
onC
hart
er R
ates
?
Higher Structural Vibrations than S.T. Can Be Solved (Resilient Seatings)
Ship‘s mobility remains unaffected!(maintenance during voyage possible)
THE NEUTRALS:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF: The New Prime Mover for LNG Carriers 30 min
The Dual-Fuel Electric Concept
Proven Technology: 32/40 DF References
48/60 DF – Main Technical Characteristics & Time Schedule
CONTENTS
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
1994 1996 1998 2000 2002 2004 2006
48/60 DF
32/40 DF
V 28/32 SI
L 32/40 DF
L 28/32 SI
History of 4-stroke Gas and Dual-Fuel Engine Development
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Genset With 6L 32/40 DFDual-Fuel Engine
Output: 2 400 kW at 750 rpm
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
1 x 12V32/40 DF, output 4.6 MW
„Sabetha“ Power Station / USA
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Genset With 18V 32/40 DFDual-Fuel Engine
Output: 7 200 kW at 750 rpm
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
32/40 DF-engine references:Stationary power plants
Peaking power plant4001X 18V 32/40 DFClay Center / USA
Peaking power plant15001x 18V 32/40 DFAugusta / USA
Stationary Power plant205 - 2504x 9L 32/40 DFBen Gurion / Israel
Peaking power plant1500 - 30003x18V 32/40 DFPoplar Bulff / USA
Peaking power plant20001x12V 32/40 DFSabetha / USA
Stationary power plant20.000 - 24.0002x 8L 32/40 DFTarakan / Indonesia
Stationary power plant32.0009L 32/40 DFCorrientes / Peru
Stationary power plant20.0009L 32/40 DFPavayacu / Peru
Cogeneration plant12.0006L 32/40 DFDBB-Frankfurt / Germany
Application:Operating hours (06/2005):Type:Plant name:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF: The New Prime Mover for LNG Carriers 30 min
The Dual-Fuel Electric Concept
Proven Technology: 32/40 DF References
48/60 DF – Main Technical Characteristics & Time Schedule
CONTENTS
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF - The New Dimension ofDual Fuel Technology
48/60 DF
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Main technical data
48/60 DF Main Data
10.310.0m/sMean piston speed
950kW/cyl.Cylinder output
514500rpmSpeed
12, 14, 16, 18V:
6, 7, 8, 9L:Number of cylinders
5.700 – 17.100kWPower range:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DFPreliminary Design Data
Diesel Operation100% MCR
Gas Operation100% MCR
Fuel consumption: 190 g/kWh* 7.680 KJ / KWh**
NOx Emissions: 12,9 g/kWh (IMO) 1,3 g/kWh @ 5% O2
Filter Soot Number (FSN): (from 25% - 100 %MCR)
< 0,3 ----
* ISO condition 5% tolerance** ISO condition 5% tolerance incl. Pilot fuel
Operation mode:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF Operation Modes (1)
Diesel mode
100%MDO (DMX, DMA, DMB)
HFO (second development step)
Constant minimum load: 15% MCRLimitations:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DFOperation Modes (2)
Dual-Fuel mode
> 99%Natural gas
(from LNG)
< 1%Pilot fuel
MDO (DMX, DMA, DMB)
Minimum load: 15% MCRCharge air temperature Methane number of fuel gas Constant overloadGas quality (lower heat value) Load application
Limitations:
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Engine Load and Air / Fuel Ratio
1,6 1,8 2,0 2,2 2,4 2,6 2,88
10
12
14
16
18
20
22
24M
ittel
druc
k
Lambda
Misfiring area
Knocking area
Mea
n ef
fect
ive
pres
sure
(bar
)
Operation window dual-fuel mode:
Air / Fuel ratio
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
knocking
Effect of charge air temperature:
Pe (%)
100
90
80
55131
45113
50122
60140
°C°F
Charge air temperature (after CAC)
Pe (%)
100
90
80
90 80 70 60
knocking
Methane number
Effect of Methane number:
Methane Number andCharge Air Temperature
Derating: 1% / Methane numberDerating: 2% / ∆1°C
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Properties of LNG at WorldwideExport Terminals
0,230,060,850,250,010,900,050,100,080,030,170,070,120,35
NitrogenN2
% mol
49,349,448,9749,3249,9147,849,3550,0249,3749,4849,2649,3549,3549,22
LHV2
MJ/kg
0,030,602,276,4790,10Ras Laffan0,010,501,505,6491,50Skida
0,051,302,806,3089,40Lumut0,603,5010,0015,0070,00Marsa el Brega0,010,070,423,2696,20Point Fortin
0,060,952,606,7989,25Average LNG
0,011,172,227,1489,33Arun0,000,100,000,1099,80Kenai
0,001,032,567,3389,02Withnell
0,020,052,408,6087,40Arzew0,001,402,954,3091,23Bintulu0,021,502,805,2090,40Bonny
0,880,28
ButaneC4H10% mol
0,000,00
Heavier C+C5+
% mol
2,485,5191,09Badak1,3413,3984,83Das Island
PropaneC3H8% mol
EthaneC2H6% mol
MethaneCH4
% mol
Terminal1
1 Source: SIGTTO
2 Calculated by Ruhrgas Software
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
LNG as Gaseous Fuelfor DF-Engine
Boiling Temperatures at atmospheric pressure:
- 45°CPropane
- 89°CEthane
+ 1°CButane
-161 °CMethane
-196 °CNitrogen
Boiling TemperatureComponent
Result: If the additional LNG is vaporized in a Forced Boil-Off Unit at arround –100 °C only Methane and Nitrogen will be evaporated.
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Requirements LHV at 100% Load
Low
er H
eat v
alue
Boi
l-off
gas
N2 content (% mol)
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
LNG as Gaseous Fuelfor DF-Engine
Results:
By using an adequate external gas supply system the evaporation of heavier hydrocarbons in the FBO unit will be avoided. So only Methane and Nitrogen will be evaporated. Therefore the methane number of the fuel gas will always be over 80.
The probability that the Nitrogen content in the NBOG exceeds 18 Mol-% is minimal.
No power reduction of the engine necessary
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Maximum Load Application
Dual-Fuel operation
Diesel operation
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
48/60 DF Additional Components
Knocking Sensor/Control
PhasePick Up
Elec. Gas valve
Air / fuel control flap
Elec. actuator
Pilot fuel injector byCommon-Rail
PressureRelief valve
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Advantages of 48/60 DF-engine
All cylinder numbers available (also 7 and 14)
80% of proven common parts with 48/60B HFO-engine
Larger operation window between knocking and misfiring
Larger operation window in terms of Methane number
Separate exchange of pilot fuel and main fuel injector possible
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Layout of Gas Supply System-Cargo Area
M
NBOG-Line
FBO-Unit
Gas HeaterL/D-Comp.
Cargo Area Engine Room
LNG-Tank
Spray Pump
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Layout of Gas Supply System and Engine Room
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Engine Gas Supply SystemFuel Gas Control Unit (GCU)
Example
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
External Exhaust Gas SystemPurging / Explosion Venting (1)
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
MBD DF Marine EnginesDNV Approval in Principle
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Time Table
2007200620052004
First production engine
Serial release
Engine test
Project planning manual
Construction / design
Concept
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
Delivery schedule
Technical release for first engines in 3rd Quarter of 2006
Delivery date of first production engine in mid 2007 (ex works)
48/60 DF
MAN B&W Diesel
© MAN B&W Diesel AG 48/60 DF Engine – The New Prime Mover For LNG Carriers 2005/12/16
MAN B&W Diesel AG
LNG Carrier Propulsion Concepts
YOUR PARTNERFOR THE LNG FUTURE !
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