Mika Ojutkangas Wärtsilä Ship Power - · PDF fileMika Ojutkangas Wärtsilä...

Gas fuelled vessels

Mika Ojutkangas 1 © Wärtsilä

Mika Ojutkangas

Wärtsilä Ship Power

m/s Viking Grace


Viking Line 2800 Pax Cruise Ferry

Wärtsilä integrated scope of supply:

Main Engines: 4 x Wärtsilä 8L50DF (DE)

Total output: 4 x 7600 kW

GVU in enclosure

Natural gas is the most environmentally

sound fuel today and with Wärtsilä's dual

fuel engines this ferry will be able to sail

without restrictions in SECA’s and NECA’s.

LNGPac 200 2 x 200 m3

Integrated tank – and aux. rooms

Bunkering system, Safety systems

Cold recovery for HVAC

The cold recovery system brings

operational savings and overall increased

vessel efficiency.


2x 200 cbm LNGPacs on aft deck


6 © Wärtsilä

Gas fuelled

DF-engine

Bunkering

stations

Gas valve

units

Evaporator

rooms

(emergency)

Venting mast

LNG tanks

Compact

Silencer

System

2x FP

Propeller

Shaft lines,

Seals &

Bearings

Bow

Thrusters

Stern

Thruster

Mika Ojutkangas

Wärtsilä integrated scope of supply:

FPP (Stainless Steel) 2 x 10 500 kW

Shaft lines, Seals & Bearings Bow

Thruster 2 x 2 300 kW

Stern Thruster 1 x 1 500 kW

The propellers are designed with the lowest

possible pressure impulses for superb

vibration control.



Compact Silencer System (CSS)

Silent operation is important for passenger

comfort, but also for the sailing route;

through the islands of the Turku and

Stockholm archipelagos.

Bunkering while loading/unloading passengers and cargo


The Engines


DF Engine - Operating modes

* * * * * * * *

* * * * * *

* * * *

* * *

* *

Intake of

air and gas

Compression of

air and gas

Ignition by

pilot diesel fuel

Otto principle

Low-pressure gas admission

Pilot diesel injection

Gas mode: Ex. In. Ex. In. Ex. In.

Intake of

air

Compression of

air

Injection of

diesel fuel

Diesel principle

Diesel injection

Diesel mode: Ex. In. Ex. In. Ex. In.


Fuel Injection systems - Pilot fuel system

Pilot solenoid valve

Pilot needle

Main needle

For optimum pilot and diesel fuel distribution


Immediate changeover from GAS to MDO on 100% load

Speed

Load

Receiver pressure

Gas pressure

Pilot fuel pressure

Diesel actuator

© Wärtsilä

Speed

Load

Receiver pressure

Gas pressure

Pilot fuel pressure

Diesel actuator

Transfer (MDO to GAS) on 80% load

© Wärtsilä

Fuel System

Pilot fuel common

rail 900bar

Main fuel

injection pipe

Main fuel

injection pump

Pilot fuel quill pipe

Main fuel quill pipe

Twin nozzle

injection valve

Inlet valve

Gas manifold

Gas bellow

Fine filter

Gas valve

Gas nozzle

Gas valve electrical connection

Injection valve electrical connection


Natural Gas As Marine Fuel

CO2

NOx

SOx

Particulates

Dual-Fuel engine

in gas mode

Diesel

engine

0

10

20

30

40

50

60

70

80

90

100

Emission

values [%]

-25%

-85%

-100%

-99%


Doc.ID: Revision: Status: 46 / © Wärtsilä

INTERNAL USE ONLY

Efficiency

Mika Ojutkangas 17

Efficiency?

If the diesel process works better in cars,

why use the Otto process at all?

Engine (Tier II) SFOC (with pumps, 5% tol.)

46C, Tier II 176 g/kWh

46F 173 g/kWh

50DF, diesel 189 g/kWh

50DF, gas 7300 kJ/kWh ?

Source: 46, 46F, 50DF Marine Project Guides


Efficiency? How to compare?

The heating value for diesel is 42 700 kJ/kg

in our case.

Case 1: 46C:

176 g / kWh * 42 700 kJ / 1000 g =

176 * 42700 g kJ

1000 g kWh

7515,2 kJ/kWh

=


Efficiency?

Engine (Tier II) SFOC (with pumps, 5% tol.)

46C 7515 kJ/kWh

46F 7387 kJ/kWh

50DF, diesel 8070 kJ/kWh

50DF, gas 7300 kJ/kWh


System basic principle

Mika Ojutkangas 22

<10 bar system

LNGPac production and transportation

© Wärtsilä

System basic principle - GVU

GVU is a module between the

LNG storrage system and the

engine

A gas valve unit is required

for each engine

The Gas Valve Unit – GVU

comprise of filters and valves,

flow meter is optional

The main functions of GVU

Pressure regulation

Leak test – sequence

Inerting and venting

© Wärtsilä

Gas Valve Unit (GVU)

GVU

Fue

l

Gas

Tan

k

Engine charge air pressure varies with load

Gas admission valve can only operate with a moderate

pressure difference between the gas pressure and

the charge air pressure

The gas valve unit regulates the gas pressure with the

charge air pressure

The Gas Valve Unit (GVU) has also important safety related functions

© Wärtsilä

Installation with GVU enclosure

Wärtsilä 34DF / 50DF GVU Wärtsilä 20DF GVU

© Wärtsilä

Some references


Dual-Fuel applications - References

6 segments 210 installations > 7’000’000 running hours

Power

Plants

DF Power Plant

57 installations

225 engines

Online

since1997

Merchant

LNGC

• 121 vessels

• 481 engines

Conversion

• 1 Chem. Tanker

• 2 engines conv.

• Complete gas

train

• Complete

design

Offshore

PSVs/FPSOs

• 20 vessels

• 93 engines

• Online from

1994

New orders:

• Harvey Gulf;

the first 5 LNG-

PSV to be

operated in the

Gulf of Mexico!

Cruise

and Ferry

LNG ferries

• 1 vessels

• 4 engines per

vessel

• Complete gas

train

• 2800

passengers

• In service early

2013

Navy

Coastal Patrol

• DF-propulsion

• DF main and

auxiliary

engines

Others

TUG

• 2 vessel

• 2 engines each

• Mechanical

drive

FPSO

• 1 vessel

• 6*18V50DF


http://www.vikinggrace.com/wordpress/wp-content/uploads/2012/02/Viking_Grace_taking_shape_940x447.png

Coral Energy, 15’600cbm LNGC


Pictures: A Veder

Yard: Neptune Werft

Owner: Anthony Veder

Delivery: Jan 2013

Amount of vessels: 1

Wärtsilä scope of supply:

• 1*W8L50DF main engine (8L50DF, 7’800kW – 27,3t/24h GAS +1% pilot or 35,6t/24h MDO)

• Gear (two stage PTO)

• CPP

• 2*W6L20DF Genset (6L20DF, 1’056kW – 4,3t/24h GAS +1% pilot or 5,2t/24h MDO)

http://www.anthonyveder.com/wp-content/uploads/2012/10/RoyBorghoutsFotografie-121206-AnthonyVederCoralEnergy-010.jpg

Viking Grace, RoPax cruise vessel


Pictures: E Laine & M Ojutkangas

Yard: STX Turku, Finland

Owner: Viking Line

Delivery: Jan 2013



• 4*W8L50DF (8L50DF, 7’800kW – 27,3t/24h GAS +1% pilot or 35,6t/24h MDO)

• LNGpac

• Gas handling system

• Propulsion

•Compact Silencer System

http://www.irish-ferries-enthusiasts.com/cgi-bin/yabb2/YaBB.pl?action=downloadfile;file=VIKING_GRACE.jpg

Border Guard vessel


Picture: Finnish Border Guard

Yard: STX Rauma, Finland

Owner: Finnish Border Guard

Delivery: November 2013



• Wärtsilä 34DF and

20DF generating sets,

in both in-line and

V-engine configurations.

http://www.ullmandynamics.com/wp-content/gallery/references/finnish-border-guard-rajavartiolaitoksen_logo-svg_.png

http://www.koreaittimes.com/image/marine-diesel-20df

MS Econuri, Guide ship


Pictures: Samsung & IPA

Yard: Samsung, South Korea

Owner: Incheon Port Authority

Delivery: Feb – 2013




http://www.portincheon.go.kr/english/PortInformation/PortGallery.asp?gnbFlag=02&depthFlag=19&idx=10


DF Tug, 6’500bhp


Pictures: CNOOC

Yard: Huangpu SY, China

Owner: CNOOC

Delivery: Q3 – 2013



• 2*W6L34DF (main engines) (6L34DF, 2’610kW – 9,6t/24h GAS +1% pilot or 12,1t/24h MDO)

Harvey Gulf PSV, EPA compliant


Pictures: Harvey Gulf

Yard: Trinity offshore

Owner: Harvey Gulf International Marine

Delivery: 2013




• El & Automation

• Gas handling system

• LNGpac

• Propulsion

Petrobras 63 – 102 MW FPSO

Yards: Cosco Dalian, China

Rio Grande de Sul, Brazil

Owner: QUIP/BWO, 2016

Petrobras, 2016

Delivery: 2013


Wärtsilä Scope of Supply:

• 6 x W18V50DF (18V50DF, 17’550kW – 61,5t/24h GAS +1% pilot or 79,6t/24h MDO)

• Power Management System


Pictures: Petrobras, QUIP, Wärtsilä

DF.wmv

LF7-2 – Fixed drilling Platform


Yard: CNOOC Qingdao fabrication yard

Owner: Newfield 49%, CNOOC 51%

Delivery: 2013




• 2*9L32

• Gas reformer

• Oil & gas system



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Mika Ojutkangas Wärtsilä Ship Power - · PDF fileMika Ojutkangas Wärtsilä...

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