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Steven Martinez

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Steven Martinez Matthew Notta Bradlee Burnham-History of Tidal Energy- 787: simple technique of a waterwheel by the Spanish, French, and British 1966: La Rance ... – PowerPoint PPT presentation

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Title: Steven Martinez


1
-Tidal and Wave Energy-
  • Steven Martinez
  • Matthew Notta
  • Bradlee Burnham

2
-History of Tidal Energy-
  • 787 simple technique of a waterwheel by the
    Spanish, French, and British
  • 1966 La Rance tidal power plant went in
    operation.
  • 2001 British Parliament states the world can no
    longer neglect the massive potential of wave and
    tidal energy
  • 2002-present Large investments in research and
    prototypes spark proposals in Turkey, China, and
    United States among others

3
-History of Wave Energy-
  • 1799 First patent of a device designed to use
    ocean waves to generate power
  • 1910 First oscillating water column was built by
    Bochaux-Praceique to power his house
  • 1940s Yoshio Masuda experimented with many
    concepts of wave power
  • 2004 Wave power was delivered to an electrical
    grid for the first time

4
-Tidal Stream Generators-
  • Very close in concept to traditional windmills
  • Most popular prototype on the market
  • Prototype sites include Norway, England, and New
    York.
  • In 2007 8 prototype turbines where placed in the
    East River between Queens and Roosevelt Island.
  • It is the first major tidal power project in the
    USA
  • Powers 1/3 of a parking garage and a supermarket

5
-SeaGen-
  • Worlds first large scale commercial tidal stream
    generator.
  • First one was installed in the Strangford Narrows
    (Ireland)
  • Generates 1.2MW between 18-20 hours a day
  • Blades span 16 meters in diameter
  • http//www.energysavers. gov/renewable_energy/ocea
    n/index.cfm/mytopic50009

6
-Barrage Tidal Power Rance Power Station-
  • Located on Rance River, France
  • 750 meters long
  • 24 Turbines
  • Capacity of 240MW
  • Annual output of 600GWh
  • Supplies 0.012 of Frances power supply.
  • Opened 1966
  • http//www.energysavers. gov/renewable_energy/ocea
    n/index.cfm/mytopic50009

7
-Calculations Tidal Stream Generators-
P the power generated (in watts) ? the
turbine efficiency ? the density of the water
(seawater is 1025 kg/m³) A the sweep area of
the turbine (in m²) V the velocity of the flow
Power equation is based on the kinetic energy of
the moving water
8
-Calculation Barrage Tidal Power-
  • E energy
  • ? the density of the water (seawater is 1025
    kg/m³)
  • A horizontal area of the barrage basin
  • G Gravity (9.81m/s2)
  • H Vertical Tide Range

The potential energy available from a barrage
is dependent on the volume of water.
9
-Environmental Impact-
  • Mortality rates of fish swimming threw the
    turbine is around 15
  • Sonic guidance to get fish to avoid the turbine
  • Placement of barrage turbines into estuaries can
    change entire ecosystems
  • Alters flow of saltwater possibly changing
    hydrology salinity
  • Sediment movement also can effect the ecosystem

10
-Comparison to Wind Energy-
  • Tidal Stream generators draw energy in the same
    basic way wind turbines do
  • Higher density of water allows a single generator
    to provide significantly more power
  • Water speeds of nearly 1/10 the speed of wind can
    provide the same energy output
  • Current in water is much more reliable then wind
    in the air.

11
-Economics of Tidal Power-
  • The cost of building a Tidal Power plant can have
    a high capital cost.
  • UK 15 Billion
  • 8000MW
  • Philippines 3 Billion
  • 2200MW
  • Operating costs are low and usually come from
    maintenance

12
-What You Can Do-
  • In the Amazon helical turbine technology are
    being used to generate small scale electricity
    for rural communities.
  • rural residents are dispersed and cannot be
    reached economically by power lines from central
    generators.
  • The only decentralized options available to them
    now are solar panels and diesel generation.
  • Configuration
  • The helical turbine rotates on a shaft with a
    pulley that runs an alternator by means of a
    belt.
  • The alternator charges batteries

13
-Amazon Project-
(b) Pulley and belt
(c) Automotive alternator
(a) 6-blade helical turbine
www.globalcoral.org/UNCSD20SUMMARY.ppt
14
-Amazon Project-
  • Energy production 120 A-h/day
  • 8 solar panels (75 Wp), installed US 5690
  • Tide-Energy generating station US 2800
  • Numbers on Annual operating costs (120 A-h/day)
  • 1000 VA diesel generator US 1397
  • Tide-Energy generating station US 824
  • Includes fuel, labor,
    maintenance, and depreciation
  • For a single Tide-Energy generating station
  • Annual Receipts (charging 5 batteries/day)
    1750
  • Costs (labor, maintenance, and depreciation)
    824
  • Profit
    US 926

15
-Wave Power-
  • Salters Duck design
  • Could stop 90 of wave motion and could convert
    90 of that to electricity
  • Shut down because of an error in calculating the
    cost, which wasnt discovered until 2008, and the
    program had been shut down in 1982

16
-How it Works-
  • The duck device bobs back and forth as waves
    pass, this motion moves a pendulum that is
    connected to a generator that produces
    electricity

http//www.permaculture.org.au/images/ocean_power_
salters_duck.gif
17
-Some Companies-
  • Some companies designing mechanisms
  • Wavegen
  • Limpet
  • Ocean Power Delivery
  • Pelamis tube
  • Renewable Energy Holdings
  • CETO
  • Oyster Wave Energy devices

18
-Advantages and Disadvantages-
  • Advantages
  • The energy is free no fuel needed, no waste
    produced
  • Not expensive to operate and maintain
  • Can produce a great deal of energy
  • Disadvantages
  • Depends on the waves sometimes youll get loads
    of energy, sometimes almost nothing
  • Needs a suitable site, where waves are
    consistently strong
  • Some designs are noisy. But then again, so are
    waves, so any noise is unlikely to be a problem
  • Must be able to withstand

19
-Environmental Impact-
  • Noise pollution
  • Displace productive fishing sites
  • Change the pattern of beach sand nourishment
  • Alter food chains and disrupt migration patterns
  • Offshore devices will displace bottom-dwelling
    organisms where they connect into the

20
-Sources-
  • (2006). Tidal Energy Industry Boom. Retrieved
    http//www.alternative-energy-news.info/tidal-ener
    gy-industry-boom/
  • (2008). Renewable Energy Ocean Wave Power.
    Retrieved http//www.energysavers.
    gov/renewable_energy/ocean/index.cfm/mytopic50009
  • (2009) Ocean Wave Energy. Retrieved
    http//ocsenergy.anl.gov/guide/wave/index.cfm
  • (2010). Americas Premiere Wave Power Farm Sets
    Sail. Retrieved http//www. alternative-energy-new
    s.info/wave-power-farm-sets-sail/
  • (2010). History of Tidal Energy. Retrieved.
    http//www.google.com/qhistoryoftidal
    energyhlentbstl 1tboueinPavS6aeAYH48Ab-q
    6y9DwsaXoi timeline_resultcttitleresnum11
    ved0CDgQ5wIwCgfp1cadb
  • Kirke, B. (2006) Developments in ducted water
    current turbines. Retrieved http//www.cyberiad.ne
    t/library/pdf/bk_tidal_paper25apr06.pdf
  • Lamb, H. (1994) Hydrodynamics. England. Cambridge
    University Press.
  • Meyer, R. (2009). Tidal energy . Retrieved from
    http//www.oceanenergycouncil.com/
    index.php/Tidal-Energy/Tidal-Energy.html
  • Tayor, P. (2007). Seagen Tidal Power
    Installation. Retrieved http//www.alternative-ene
    rgy-news.info/seagen-tidal-power-installation/
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