offshore deepwater aquaculture & wave energy a natural ......scottish salmon farm sites 4...
TRANSCRIPT
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Aquaculture Experience
Aquaculture started in sheltered waters: • Close to shore • Easy to operate • Challenges with sea lice and disease • Pollution
• Little wave energy
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Scottish Salmon Farm Sites
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Scottish sites – a closer look
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The Move Offshore
• Enabled by more robust equipment - Cages, moorings, feed barges, nets
• Giving better fish growth
• Less issues with disease
• Better spread of waste
• More wave energy available
The Wave Energy Challenge
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Each articulated junction in a Squid allows it to follow the orbital particle motion of the waves, where the wave energy lies, and allows energy to be absorbed from any wave direction
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Series 6 - The Design Brief
€900 €4,500 €340
Low Cost Maintenance Strategy
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Why blue power?
Fuel costs rising Meeting customer ‘green’ pressure through lowering carbon costs of operation Making use of the available wave resource
Generation Costs
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Different markets have different cost bases The objective is to reach parity with other generation in a market without revenue support
Green Genius (Greenius) Award
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• UK Government program
• Projects tackling 2 or more of water, food & energy • Listed as an example ‘wave powered fish farming’ • In the UK farms moving further offshore
• Feasibility 2012-13 • Demonstration 2013 - 2015
The Wave Climate
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• Mix of actual and potential sites
• Parameters for each site modelled to calculate electrical output
• Feasible output at >0.3m waves
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Varied Wave Resource
Modelled results from an Albatern / IDCORE project showing energy yield. Red bigger – blue more sheltered – smaller waves matching with arrays of smaller sized units But need to watch for extreme conditions
Mooring Systems
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• Challenges in the short term • Synergies in the longer term
Site Electrical Load
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• Graph comes from a project with a Chilean university funded by CORFO- Govt R&D arm
• Load varies with farming activity
• Main load is the feeding system
• Also lighting, cameras, telemetry, sensing & communications, predator scarers and net cleaning
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Salmon Farm Projects
Isle of Muck • - new site in 2014 • 3m waves • 3 unit array
Mingary Bay • - risk mitigated site
operating with fish • 2.7m waves • 6 unit array + grid
MINGARY BAY
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5 busy days……
A working array
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Getting packed for a move
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6 Squid units stacked on deck
Next …Mingary Bay Project
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Mingary Bay Site Plan
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Illustrative Examples
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45 kW
• 6 modules
• Surface footprint: 860m2
• Capture Width: 40m
• Single cable to customer
• 20m minimum depth
135 kW
• 18 modules
• Surface footprint: 2,615m2
• Capture Width: 80m
• Single cable to customer
• 1kV DC transmission voltage
Offshore Aquaculture where next?..........
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THANK YOU
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Midlothian Innovation Centre Pentlandfield Midlothian Scotland EH25 9RE
David Campbell Director Albatern Ltd
T +44(0) 131 440 9025 M +44(0) 7739 429827 E [email protected] www.albatern.co.uk