Introduction

JAB design, team of 3 members designing innovative energy solutions

Jamie Thompson

Adam Lister

Ben Skinner

Introduction

From the initial stages of establishing JAB designs it was generally agreed attendance was a high priority, from the illustration shown below it can be noted that this group has an impeccable attendance record.

Due to illness

Introduction

For more visual impact or additional information to this presentation please log on to…

www.jabdesign.org.uk

www.jabdesign.org.uk

The Website…

• 3 Different Software's were used.• Adobe Photoshop• Macromedia Dreamweaver• FTP Surfer

• Basic HTML• No complicated ASP or PHP Coding• Uploaded nightly via FTP• Using Darsh.com is free

• Visit Jabdesign.org.uk to browse for yourself• Site Map…..

www.jabdesign.org.uk

The Website…

Site Map….•

The task…

“.. To design a small offshore floating wind turbine power generator…”

How we set about doing this…

- Each member was assigned specific tasks and allocated a role.

- A PDS was drawn up to give a clear indication of limits and constraints.- Preliminary designs were initiated and assessed.- Research was an on going task throughout the entire project.

Research…

From initial research we were able to establish the following generic facts.

-Wind farms at sea need to be offshore to avoid noise and view pollution-Shipping lanes obviously need be avoided and not compromised-Wind farms are actually good for sea life as they prevent vessels fishing in that particular area.-As an average, existing wind farms at sea cost £1000 per kW generated and a common view is that money is better spent developing more effective energy sources.-The UK wind farm market has a potential size of £48 billion and one 75MW installation generates 245 jobs-The current UK electricity requirement is roughly 330 TWh-y (terawatt – hours p/year)

P.D.S.

With a P.D.S concentrating on the limitations and constraints of any potential design, it also highlights any novel features:The key points of this document are as follows

Key weight = 1200kg’s + any water in ballast tanks

Price to sell = £45000 (includes wiring into grid)

Size of vessel (excluding mast + turbine) = 8m x 8m x 3m l x l x d excluding keel

Must withstand high winds and adapt to weather changes

Projected life span of 10-15 years with years free maintenance

Initial designs..

A semi permanent design, can be lifted into place with a medium sized crane, this unit is suitable for lakes, rivers and marsh lands.

A completely portable design, ballast tanks for stability with a keel. This unit is anchored down and can stay at sea for periods of up to 12months at a time

A completely portable design, based on a catamaran unit with turbine attached to this, stability would be compromised with this design however.

Our solution…

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An innovative design harnessing the wind’s power1 ‘Proven’ WT600 turbine generating 9000kWHUnique stability control allowing the vessel to gain or loose buoyancy through valves and pumpsInterlocking system, allowing up to 5 units per row not affected each others wind/spaceTotal sale price including connection to the grid = £45000The unit is capable of being unattached from the other units and taken to the dock for servicing and cleaning.The vessel can withstand gale force winds and moderate to high level storms, however the turbine will need to be stopped for its own protection.

How it works…

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How it works…

Red arrows show ballast tanks (4 in total) technology taken from submarine architecture.

In summary, when the vessel needs more stability more water is taken into the tanks and thus the level is lowered. If the turbine needs more height (low wind) the vessel can be raised by pumping out water.

All tanks are linked to the main pump and reserve pump for emergencies.

The illustration to the right shows the keel attached to the vessel. The ballast tanks can clearly be seen from this view.

Stability…

Maintaining stability and controlling height The illustrations to the left show the pipe work that connects to the ballast tanks and the way in which the system controls the vessel

- The yellow pipes carry water into the ballast tanks from the sea through the pump and filtration

- The red pipes carry water into the sea from the ballast tanks through the pump and filtration

The blue pipes carry air in and out of the tanks to ensure the pressure can be regulated and assist in the pumps work.This system can work if

-The vessel is being subjected to a side wind and one side needs to have more buoyancy than the other, the computer control system using valves can send water/air to the required tanks.

-The unit needs to be serviced and raised to do so, or the height needs adjusting due to weather conditions

-This is combined with the use of the keel

Detail..

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MaterialsThe shell – Galvanised steel sheet, rolled edgesTurbine blades – Wood/epoxy. Brushless, direct drive, permanent magnet generator All turbine components – Galvanised steel, aluminium and stainless steelVessel inner details – Red oxide steel sheet with supports welded to inner shellKeel – For cost reasons made from steel with sacrificial protection. (zinc blocks)Pumps and generators – enclosed in galvanised steel boxAll cabling – marine spec contained in vessel framework Ballast tanks - Low alloy steel with a tar epoxy coating

Detail..

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ManufactureBefore the turbine is assembled to The shell – Galvanised steel sheet mig welded together. Pressure tested with high quality control for perfect seal Turbine blades – purchasedAll turbine components – purchasedVessel inner details – Welded construction with tar epoxy sealant along all welds and around all bolts and fixingsKeel – Bolted to plates connected to the mast and painted in red oxide paint for protection. Welded to vessel and sealed to high standardPumps and generators – purchasedAll cabling – purchasedBallast tanks – purchased

Cost…

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Cost of turbine - £18,300 (including connecting into grid)Cost of galvanised steel as raw material - £1200Cost of welding steel sections - £250 p/day p/worker x 4 days = £2000Cost of keel - £1000 approx for bespoke specificationBallast tanks - £225 per unit x 4 = £900Pump (controls buoyancy) - £1500 includes wiringReserve pump - £1500 includes wiringComputer control & software program to control buoyancy - £800 computer £1200 software specialist Safety lighting - £150Tar extended solvent free Epoxy coating - 5kg - £59.99Anti corrosive steel primer – 20ltr - £160Anchor points – 1 anchor £350 x 2 = £700, high tensile corrosion resistant wire = £35 per 30m £466 per anchor point, 2 per vessel. Total = £1166The above costs are taken from research carried out on raw materials and labour costs, on actual construction costs for transport and storage will be required, for each unit this is estimated at a cost of £3000Total cost of 1 unit = £29935.99 + £3000 + £0 for 1 years free maintenanceTotal = £32935.99. Sale cost =£45000

Artist’s impression

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This view was created in ‘Photoshop’ and shows the way in which the turbines will look from a cliff side.In this view the vessels are fully submerged using their airtight buoyancy system taking in air and releasing water.

The units are connected underwater and linked to the grid

The end…

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Any questions?