Harnessing Renewable Energy from the Sea › events › eurocean2010 › attachments ›...
Transcript of Harnessing Renewable Energy from the Sea › events › eurocean2010 › attachments ›...
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Harnessing Renewable Energy from the SeaEurocean : October , 2010
Henry F Jeffrey
UK Energy Research CentreUniversity of Edinburgh UK Energy Research Centre
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Background
North Sea, Oil and Gas Energy
Marine Renewables: World 1st commercial grid connected project
SuperGen MarineUKERC
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Structure
Overview of technologies
Wave and tidal developments
Deployment Scenarios
Research challenges
Summary
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Structure
Overview of technologies
Wave and tidal developments
Deployment Scenarios
Research challenges
Summary
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Offshore Wind
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Targets
• 40 GW by 2020
• 150 GW by 2030
• Over 100 GWalready in planning
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Waves: uses the kinetic energy of the water particles and the potential energy of elevated water particles
Tidal stream: make use of kinetic energy contained in fast flowing tidal currents (generally found in constrained channels)
Tidal range: make use of the potential energy from the difference in height between high and low tides (can be found in estuarine areas)
Tidal
Ocean thermal energy conversion (OTEC): uses the temperature differential between cold water from the deep ocean and warm surface water; may include submarine geothermal and seawater air conditioning
Salinity gradient: uses the pressure differential between salty seawater and fresh river water (osmotic energy)
Ocean Energy Resources
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Maturity of Technologies
Mature technology, despite limited applications.
Significant number of technologies being developed worldwide: some of these technologies are at or near full-scale development and undergoing sea trials
Advanced stage R & D
Early stage R & D
Tidal barrages
Waves and tidal currents technologies
OTEC technologies
Salinity gradient
technologies
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Pelamis 3x750 kWInstallation: Portugal
Fred Olsen, “BOLT”Norway
UK Aquamarine's Oyster wave energy unit
Powerbuoy (40 kW) OPT, USA
Wave Energy Technologies
Oscillating Bodies
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Installation:Portugal
AW-EnergyWaveroller
(Finland)
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2008 | Seagen (1.2 MW)Marine Current Turbines Ltd (UK)
Northern Ireland
Tidal Current
2007 | Open Centre Turbine (250 kW)OpenHydro (Ireland)
Installation at EMEC (UK)
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Salinity Gradient Project
2009 | Osmotic power, prototype near Oslo, Norway
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Structure
Overview of technologies
Wave and tidal developments
Deployment Scenarios
Research challenges
Summary
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Marine Current Turbines
Source: MCT
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Pelamis Wave Power
Source: PWP
• Buildings their 2nd
generation device (E.On)
• Several modules launched and nearing completion
• Another sale SPR
• Crown Estate lease
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Aquamarine power
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Aquamarine Power
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Structure
Overview of technologies
Wave and tidal developments
Deployment Scenarios
Research challenges
Summary
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WHY Roadmaps
Roadmaps are an effective tool to underpin the identification of policies and measures
Focus R&D and business investments to accelerate technology development.
Coherent approach and significant engagement with the global market
Two main types Deployment Development
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Action Plans, Vision documents and Roadmaps
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ESF Vision
Pan European Pan technology vision
Act as a guide to policy makers and the wider stakeholders
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UK Marine Energy: Sustained cost reduction
Ins talled c apac ity (GW)
0
20
40
60
80
100
120
20002005
20102015
20202025
20302035
20402045
2050
GW
S torage
S olar P V
Marine
Im ports
B iowas te &othersWind
H ydro
Oil
Nuclear
G as C C S
G as
C oal C C S
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EUOEA
EU OEA Energy European Ocean EnergyRoadmap 2010 - 2050
Installed capacity
3.6 GW by 2020
188 GW by 2050
Jobs
26000 in 2020
Over 300,000 by 2050
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Structure
Overview of technologies
Wave and tidal developments
Deployment Scenarios
Research challenges
Summary
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Main Technology and Deployment Challenges
Challenges
Affordability
Reliability
Survivability
Predictability
Manufacturability
Installability
Operability
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Technical Challenges
Power Take Offand Control
EngineeringDesign
Lifecycle & Manufacturing
Device modellingResource ModellingStandards
Installation,O&M
SystemPerformance
Environmental
ElectricalInfrastructure
Moorings &attachments
ExperimentalTesting
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identified research challenges to establish the industry as:
Availability of test facilities across the range of scales
Moorings and foundations for progressively deeper water
Resource spatial and temporal modelling
Resource: device modelling Integrated PTO designs and control Installation and O&M techniques Industry standards & life cycle
analysis Design for survivability and yield Electricity network infrastructure and
technology Economic appraisal & policy
interaction
UKERC Road Map
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Optimisation of collector form
Genetic algorithms, numerical modelling and tank testing is being used to evolve better, maybe ultimately even optimal, designs of wave energy converters.
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Combined wave and tidal effects
This work is advancing design, prediction and test procedures to recognise combined presence and effects of wave and tidal currents.
Tests are being conducted at Queens, Edinburgh and in a new dedicated 1/10th scale facility at Portaferry and at EMEC.
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Arrays, wakes and near field effects
This work is determining the extent of local impact of multiple wave or tidal converters on the energy flux environment and on each other to identify the need for optimal configurations and control strategies for arrays.
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Power take-off and conditioning
The prime-mover, drive train, generator and power converter must be designed from the outset in an integrated manner, fit for the purpose in the working environment. This work is integrating structural, magnetic, thermal and electrical designs to optimise performance:cost ratio.
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Reliability
This work will establish an effective method to quantify the reliability of marine energy converters even in the scarcity of industry-specific component failure rates and environmental data. It will explore the effect of changing maintenance strategy on availability in arrays.
©© ©
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Ecological Consequences
This work is establishing the principal ecological consequences of the extraction of tidal and wave energy in coastal and offshore zones.
It is exploring
LONG TERM CONSEQUENCES: Population disturbance- Population monitoring over 5 years - GPS tracking of seal movements
SHORT TERM CONSEQUENCES: Behavioural- Changes in local distribution patterns- Active sonar
Principal species of concern: Common (Harbour) Seal – EU Designated Species
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Summary
• Significant progression in the sector in deployment, policy, regulation and funding
• Considerable operational and research challenges to be overcome
• Commonality will be key.
• ESF Vision offering a European, pan technology approach.