1 / 12

Alaska Presentation January 2007

Alaska Presentation January 2007. The Rotech Tidal Turbine – Design Development Initial Concept. Designed with O&M foremost in mind Removal of complex components and design No mechanical Gearboxes, yawing or variable pitch mechanisms

josef
Download Presentation

Alaska Presentation January 2007

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Alaska Presentation • January 2007

  2. The Rotech TidalTurbine – Design DevelopmentInitial Concept • Designed with O&M foremost in mind • Removal of complex components and design • No mechanical Gearboxes, yawing or variable pitch mechanisms • System bi-directional and duct straightens flow allowing for off-turbine axis flows • Gravity Base allows quick installation and little if any seabed preparation • No gearbox allows generation compartment to be hermetically sealed removing risk of leaks • Modular section (cassette) containing all working parts is easily removable and taken to shore for service

  3. The Rotech TidalTurbine – Design DevelopmentAtkins (Mk I design) • Atkins developed initial concept using Oil & Gas Design codes • Full stress and fatigue analysis • Base development including 3-point to contact to remove torsion. • Cheap Ballast (pre-installed) used to make up on-bottom weight needed to prevent sliding • Note the position of the modular ‘cassette’ (the magenta coloured centre unit)

  4. The Rotech TidalTurbine – Design DevelopmentAtkins/Rotech MkII Design • Further development to make duct load bearing to remove tubular support frame • Over 20% costs reduction over initial design - steel requirement reduced and fabrication significantly cheaper • Base still gravity concept (not 3 mono-piles!) • Eloquent design allowing for significant local fabrication and handling

  5. The Rotech TidalTurbine – Design DevelopmentSir Robert McAlpine Commercial (All Concrete) Design • Sir Robert McAlpine commissioned to develop commercial ideas and processes from first principles • Design remarkably similar to Atkins prototype design concept

  6. The Rotech TidalTurbine – Modular Cassette and Generating Pod • Modular unit (cassette) containing turbines, all hydraulics and generating equipment • removed quickly and taken to shore for service • replaced by another unit to minimise down time • Pod seals to prevent leaks and held at atmospheric pressure and temperature to enable components to operate in ‘design’ conditions

  7. Hydraulic Circuit Assembly September - December 2006

  8. TIDAL TEST SITE EMEC Lunar Energy Test Berth Depth: 45 m (150 feet) Flow Peak 7.2 knots (3.7 m/s)

  9. Benefits of using the RTT • Technology Environmentally sensitive • Invisible from above the surface • No impediment to shipping or other social activity • No shoreline equipment required (except connection point) • Environmental credentials proven at EMEC 07/08 • EMEC has significant environmental considerations: Seal sanctuary and whale migration route • RTT has unique opportunity to mitigate issues through screening intake if necessary • RTT is below level of any surface ice and given the minimum 4 year cycle for maintenance, no service required during winter.

  10. RTT and ALASKA • Current RTT design is ideally suited for the Alaskan operating environment “Lunar Energy RTT - Only currently viable deepwater technology design”

  11. Commercial Development • United Kingdom • 2007 Sea trials of the EMEC 1MW unit • 2008/9 Commissioning and fabrication of the first Commercial Units • 2009/10 First demonstration field • 2011/12 First development of first commercial field • International • 2006 June 2006, Developer in New Zealand submitted resource consents application nominating the Lunar Energy RTT device for first commercial tidal stream project (200+MW). • 2007 Negotiations ongoing for initial demonstration projects in Canada and in the US • 2009 Installation and commissioning of projects in Canada; US; and New Zealand • 2010/11 First developments of commercial fields outside UK

  12. www.lunarenergy.co.uk

More Related