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Oceanlinx Wave Energy Technology

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Ocean Energy - Wave Energy - Rewable Energy -

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									    The Oceanlinx Wave Energy Technology

                Dr Tom Denniss




1
    Potential for Ocean Energy
     The global sale of electrical energy currently runs at around
      $2 trillion annually

     However, the amount of energy contained in the oceans is
      equivalent, at today’s average global electricity price, to
      more than $10,000 trillion

     Even a miniscule fraction of this potential can add very
      meaningfully to the world’s quest for a sustainable energy
      future




2
    What is Wave Energy

     Extractable wave energy is the energy, both kinetic and
      potential, contained in surface gravity waves – the type of
      waves we see propagating on to our beaches and headlands

     These waves account for more than twice the world’s current
      energy usage.

     Wave energy technologies tend to concentrate on the “swell”,
      in preference to the breaking waves




3
    About Oceanlinx – the Technology

     Technology invented in 1990

     Based on the concept of the Oscillating Water Column
      (OWC)

     Focuses energy into the system through a proprietary
      technique utilizing resonance

     Converts the energy in the subsequent airflow into
      electricity via a unique and proprietary turbine



4
    How it Works




5
    The Resonance - How it Works




6
       Equations of Motion
                         d 2z          dz            2
                                                     0   z             i   cos i t                    i   sin i t
                         dt 2          dt                    i 1




      Solution

                                       2     2                                               2              2
                          n     [ i(   0    i    )       i   i ] cos i t          [ i(       0             i    )   i   i   ] sin   i   t
    z (t;   0   , i; )                                             2        2 2          2        2
                          i 1                                (     0       i)                    i




7
    Maximum Resonant Amplitude




8
    Variable-pitch turbine
    (Oceanlinx / University of Sydney: 1997-2002)




        Airflow                                     Airflow

                                       Rotation               Rotation




9
     The Turbine – How it Works




10
       Oceanlinx’s technology recognised by the International Academy of
       Science as a 2006 Finalist in the Outstanding Technology of the Year
       Awards




     Source: International Academy of Science website (http://www.science.edu/TechoftheYear/Finalists/WaveAmp/WaveAmp.htm)




11
     Port Kembla Project - Construction On Shore




12
     Lifted into the Ocean




13
     Lifted on to a Heavy Lift Vessel




14
     Transported to Site




15
     The Port Kembla Project - Deployment




16
     Port Kembla – Sun Rise Operation




17
18
     Storm at Port Kembla




19
     Other Outcomes from the Storm




20
     Outcomes So Far
      Deployed and operating since late 2006

      Produces power as expected

      Electrical controls help in smoothing the power flow

      Survivability is very good

      Has attracted marine growth, so will need future eco-
       friendly bio-fouling protection


21
     Positives
      No moving parts below the waterline, so no possible
       harm to marine life

      Turbine noise levels verified independently at 74 dB –
       equivalent to a household vacuum cleaner

      Minimal aesthetic issues – much of the device lies below
       the water line




22
     Maui Project
      Located on the north shore of Maui
      A collaboration between Oceanlinx, MECO, and
       Renewable Hawaii Inc.
      Hawaiian Legislature has approved $20 million of
       Special Purpose Revenue Bonds (SPRB)
      Proposed 2.7 MW plant
      Timing – expected to be operational some time in 2011,
       dependent on permitting and other regulatory bodies,
       such as FERC



23
     Maui – Project Site




24
     Maui Project Site




25
     Construction
      Construction hopefully to take place within the Hawaiian
       Islands, most probably on Oahu – will depend on
       feasibility analysis

      The structure will then be floated or placed on a heavy
       lift vessel for transport to Kahalui Harbour

      The structure will then be floated several miles and
       installed near Pauwela Point




26
     Other Projects

         Oceanlinx is involved in other projects (in various stages
         of development) in

        Portugal
        Southern Australia
        Mexico
        Rhode Island
        Namibia




27
     Summary
      Oceanlinx has developed a novel and commercially
       viable wave energy conversion technology
      First full scale prototype, incorporating power and
       desalination, demonstrated at Port Kembla, Australia
      Maui project is currently Oceanlinx’ main commercially
       focused project
      Further projects also under development in Australia,
       North America, Africa, Europe and elsewhere




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