air turbines in wave energy - the efficiency challenge...depends primarily on the pneumatic...
TRANSCRIPT
Wave Energy – making it happen
Air turbines in Wave Energy
- the efficiency challenge
Wave Energy – making it happen 2
Challenges in Wave Energy
RELIABILITY:
▪ Temptation to test everything at once
▪ Failures never or seldom occur in the main components of the device
▪ Keyword to success : simplification
LEVELIZED COST OF ENERGY (LCOE=Lifetime Costs/Ener. Production)
▪ Still high in comparison with other renewables
▪ Prototyping is difficult because of high costs of innovation at sea
▪ Winner technology is proving hard to emerge
LYFE CYCLE ASSESSMENT (LCA) :
▪ Assessing the environmental impacts associated with all the stages of the product's life from raw material extraction through materials processing
▪ Not a clear winner against other renewable technologies
EFFICIENCY OF THE CONVERSION SYSTEM:
▪ Depends primarily on the pneumatic conversion ability of the WEC
▪ Depends 2nd on the Power Take-Off unit (turbine/generator) efficiency
Wave Energy – making it happen
Air turbines history in the company
together with IST
CORES FP7 - 2011:
▪ Wave conversion principle: Oscillating Water Column (OWC)
▪ Wave Converter: Backward Bent Duct Buoy (BBDB) from Ocean Energy
▪ Technology of PTO: Moving Guide Vanes (MGV) Impulse turbine
▪ Key features: Good operating range and mechanical complexity
▪ Efficiency : 55%
OPERA H2020 - 2018:
▪ Wave conversion principle: Oscillating Water Column (OWC)
▪ Wave Converter: Spar Buoy from Oceantec /IDOM
▪ Technology of PTO: Biradial turbine
▪ Key features: Excellent operating range; integrated High Speed Stop Valve
▪ Efficiency : 62%
BOMBORA Wales - 2020:
▪ Wave conversion principle: Submerged Membrane
▪ Wave Converter: BOMBORA mWave
▪ Technology of PTO: Unidirectional turbine
▪ Key features: Excellent operating range and high efficiency
▪ Efficiency : 80%
Wave Energy – making it happen 4
Air turbines efficiency evolution
OPERA H2020 - 2018CORES FP7 - 2011 BOMBORA Wales -2020
Wave Energy – making it happen 5
Secrets for a successful result:
▪ Use design solutions with proven manufacturability and assemblability
▪ Establish a sourcing strategy
▪ Develop a supply chain
▪ Qualify the suppliers
▪ Enforce a Quality Plan and follow it up
▪ Assist the suppliers on the delivery:
▪ Develop fabrication tools/jigs
▪ Define main manufacturing and assembly sequences
▪ Define intermediate tests to validate progress
Welding Assembly sequence of BOMBORA PTO
(video courtesy of ASM Offshore Methods Dept.)
Manufacturing a PTO
Wave Energy – making it happen 6
Secrets for a successful result:
▪ Select design approaches that with proven manufacturability and assemblability
▪ Establishing a sourcing strategy
▪ Develop a supply chain
▪ Qualify the suppliers
▪ Enforce a Quality Plan and follow it up
▪ Assist the suppliers on the delivery:
▪ Develop fabrication tools/jigs
▪ Define main manufacturing and assembly sequences
▪ Define intermediate tests to validate progress
➢ Assembly sequence of BOMBORA PTO (courtesy ASM Offshore Methods Dept.)
Manufacturing a PTO
Wave Energy – making it happen 7
Confidential – Property of Bombora Wave Power
➢ First grid connected mWave project
➢ First multi-leg mWave deployment (scalability)
➢ Alternative to existing diesel power generation
➢ Framework Agreement between Enzen and
Cabildo de Lanzarote
➢ Consortium team members assembled
➢ Grid connection application in progress
➢ Survey campaign in progress
➢ Grant application submitted
2018 2019 2020 2021 2022
2MW 28kW/m La Santa
Lanzarote Wave Park Project
AgreementSigned
Engineering & Approvals
Construction & Installation
Commissioning &Operation
Feasibility & Financing
Wave Energy – making it happen 8
▪ Project management – team of 24 industry specialists
▪ Technology provider & source of Background IP
▪ Local government
▪ Regulatory approvals & stakeholder management
▪ Consenting, regulatory approvals, stakeholder management & site development
▪ Main service provider
▪ Grid connection study and specification of power conditioning
▪ Design & development of electrical system
Bombora Wave Power Ltd
(Australia)
Cabildo de Lanzarote
(Spain)
Enzen Spain S.L.
(Spain)
Engie Laborelec
(Belgium)
▪ Aerodynamic design & testing of turbine
▪ Control law development & testing
Instituto Superior Tecnico
(Portugal)
▪ Mechanical design and supply of turbine assemblyKymaner Tecnologias
Energeticas (Portugal)
▪ Site development and financing advisorDP Energy
(Ireland)
Lanzarote Consortium Partners
▪ Membrane supplierTrelleborg
(Czech Republic)
Wave Energy – making it happen
Thank you for your attention