05 05 david obrien presentation
TRANSCRIPT
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By: ,
By: ,
17th INTERNATIONAL CONFERENCE & EXHIBITION
ON LIQUEFIED NATURAL GAS (LNG 17)
Introduction of South Hook Combined Heat &
Power (CHP) OpportunityDavid P. O’Brien
ExxonMobil Gas & Power Marketing
April 2013
17th INTERNATIONAL CONFERENCE & EXHIBITION ON
LIQUEFIED NATURAL GAS (LNG 17)
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Presentation Outline
• What is CHP?
• South Hook History
• South Hook CHP Concept
• Conclusions
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CHP = Combined Heat & Power
• Same as “cogeneration”
• Uses energy that wouldotherwise be wasted fromthermal power production
• CHP contributes 11% of
electric power in Europe,8% in the United States
ExxonMobil LaBarge CHP
Wyoming, USA (100 MW)
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• Energy efficiency
• Emissions reduction
• Operating cost savings
• Reliability improvement
CHP Offers Many Advantages
ExxonMobil Beaumont CHP
Texas, USA (~500 MW)
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• Brownfield construction
• Location dependent onsite heat demand
• High capex vs stand-alone gas power plant
• Requires stableregulatory framework
…..CHP also has challenges
ExxonMobil Antwerp CHPBelgium (125 MW)
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South Hook LNG Terminal History
• Located on MilfordHaven in Wales
•South Hook Terminalfully commissioned in2010
• Joint venture with Qatar
Petroleum International,ExxonMobil, Total
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Current Terminal Operation
• South Hook is a conventional LNG receiving and
regassification terminal• Warm water, heated by fuel gas, is the medium
for heat transfer in the vaporisers
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South Hook CHP Concept
• Residual heat from a gas-firedcombined cycle plant could beused for LNG vaporisation
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SHCHP - High Efficiency
•Heat from combustion used 3 times
– Gas turbine generates power
– Steam turbine generates power
35% 20%
15%
35% for Gas
Turbine
Power
20% for
Steam Power
30% for LNG
Vaporization
15% WasteHeat
– Hot water vaporizes LNG30%
• CHP efficiency ~ 85%
LNG
Vaporizers
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0%
100%
Coal Fired Power
Plant
Combined Cycle Gas
Turbine
South Hook CHP
Thermal EfficiencySHCHP – Low Emissions
0.0
1.0
Coal Fired Power
Plant
Combined Cycle Gas
Turbine
South Hook CHP
Tonnes CO2 per Megawatt-Hour
Source: ExxonMobil Analysis
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Gas for Power Growing Rapidly
Source: ExxonMobil 2013 Outlook for Energy
0
100
200
300
400
500
600
2000 2010 2020 2030 2040
Gas Demand By Sector
BCFD
ElectricityGeneration
Industrial
Res/Comm
Transportation
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Conclusions
• Gas plays a critical role in power generation
• CHP can further extend the environmental
benefits of gas-fired power generation
• Strong partnerships are key to identifying
innovative opportunities like South Hook CHP
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