l01 - qgiii - introduction - rev 2
TRANSCRIPT
Rev.02 – 05.12.2008
Simulator based Operator Course
Kongsberg Maritime ASHamworthy Gas Systems ASHamworthy LNG Reliquifaction System QGIII
Rev.02 – 05.12.2008
Page 1
Rev.02 – 05.12.2008
Lesson 1: LNG, a mean for concentrating and transporting energy Page 2
-Operation manual.
HANDOUTS
Introduction to reliquefactionLecture30 min.- What is the purpose? (From propulsion to recovering, environment).
Objectives (from analysis)MethodDurationConduct
CONDUCT DETAILS
What is the purpose with the plant, function and restrictions?
Basic control system and technical understanding.
30 min. inc. breaks.1
PURPOSEPRESKILLSDURATIONMODULE CODE
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
LNG1 m3
GAS
≅ 600 m3
15°c
-162°c
STORAGE
GASFIELD
LOADEDVOYAGE
BALLASTVOYAGE
JETTY
UNLOADINGDISTR. SYSTEM
POWER GEN.STORAGEVAPORIZATION
LIQUEFACTION
RECEIVING TERMINAL
Lesson 1: LNG, a mean for concentrating and transporting energy Page 3
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
• Boil-Of-Gas (BOG) is a result of the LNG warming up during transportation.• All BOG now used as fuel in steam turbine propulsion systems.
• Reliability in traditional systems considered to be very high.
Lesson 1: Traditional LNG carriers’ propulsion system Page 4
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
Page 5
• Both HFO & BOG as fuel in boilers• Low maintenance & lubricating cost• Proven and reliable concept
Steamturbine
Advantage Disadvantage
Lesson 1: Steam turbine system Page 5
• Low efficiency of turbines results in highfuel consumption/cost
• High total installed power as separate auxiliary generator required
• Limited propulsion redundancy• Valuable cargo used as fuel• Power required by large LNG carrier at boundary of existing turbine design
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
• Both HFO & BOG as fuel in boilers• Low maintenance & lubricating cost• Proven and reliable concept
• Low efficiency of turbines results in highfuel consumption/cost
• High total installed power as separate auxiliary generator required
• Limited propulsion redundancy• Valuable cargo used as fuel• Power required by large LNG carrier at boundary of existing turbine design
Steamturbine
Advantage Disadvantage
Lesson 1: Steam turbine system Page 6
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
• High overall efficiency• Proven propulsion system with high level of reliability
• Reliquefaction of BOG increase amount of cargo delivered
• Reduced CO2 emissions • Well known technology for shipyards& owners (design, installationand operation)
• Propulsion redundancy
• Need of separate auxiliary generator, therefore high total installed power
• NOx & SOx emissions• Bunkering• Weight of equipment vs cargo
Slow speed diesel
Advantage Disadvantage
Lesson 1: Slow speed diesel with BOG reliquefaction Page 7
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
Advantage Disadvantage
• High overall efficiency• Proven propulsion system with high level of reliability
• Reliquefaction of BOG increase amount of cargo delivered
• Reduced CO2 emissions • Well known technology for shipyards& owners (design, installationand operation)
• Propulsion redundancy
• Need of separate auxiliary generator, therefore high total installed power
• NOx & SOx emissions• Bunkering• Weight of equipment vs cargo
Page 8
Slow speed diesel
Lesson 1: Slow speed diesel with BOG reliquefaction
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
Source: Man B&W
Lesson 1: Typical Thermal Efficiencies of Prime Movers Page 9
Kongsberg Maritime ASHamworthy Gas Systems AS
Rev.02 – 05.12.2008
• BOG reliquefactionin combination with 2stroke diesel engine(s)
• The Moss RS reliquefiesBOG and send LNG back to the cargo tanks
• Moss RS offerseconomical and technical advantages
• HGS has worldwide rights to the patented Moss RS TM
Lesson 1: Alternative to traditional LNG carriers’ propulsion system Page 10
Kongsberg Maritime ASHamworthy Gas Systems AS