OCEAN WAVE ENERGY

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OCEAN WAVE ENERGY
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OCEAN WAVE ENERGY
There are three types of wave energy
generatorsFloats or Pitching Devices These
generators produce energy from a bobbing or
pinching action from a floating object. They are
mounted on a device that is fixed to the ocean
floor.Oscillating Water Columns These
generators produce energy from the wave, the
driving and falling motion of the water in a
cylindrical shaft, the rising and falling of the
water column drives air into the shaft powering a
turbineWave surge or Focusing Devices These
generators produce energy from a shore mounted
structure, that channels water into an elevated
reservoir, using standard hydropower technologies
to power and generate electricity
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INFOMATION
Ocean wave energy technologies rely on the
up-and-down motion of waves to generate
electricity. These technologies are relatively
new to this day and age, however, installations
have been built or are under construction in a
number of countries, including Scotland,
Portugal, Norway, the U.S.A., China, Japan,
Australia and India. In Australia at present
there is a plan for an Oscillating Water Column
to be built on the East Coast of Australia, this
project is still being explored and will soon be
up and running in 2004-05. This generator will
provide the people of NSW with some of their
power as a trial until further exploration of
the project is complete. Ocean Wave Energy
Generators must be set up in ideal locations,
where there is consistent sized swell. The
structural system of the generator must be
extremely strong to with stand the mass power of
the ocean.
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OCEAN WAVE ENERGY
The proposed wave generator for NSW is a
Oscillating Water Column. In an oscillating water
column (OWC) installation, waves enter a fixed
structure (the column) at one end. The water
pressure forces air up the column and past a
specially designed turbine, causing the turbine
to spin. A generator connected to the turbine
produces electricity. As the wave retreats, the
air in the column is decompressed and drawn down
past the turbine once again. Energetech's OWC
design features a parabolic wall that focuses the
incoming wave, maximizing its height and the
pressure it exerts on the air in the column
therefore energy is produced. A unique turbine
design increases generation efficiency.
Energetech is currently installing a 500 kilowatt
(kW) offshore OWC system at Port Kembla, New
South Wales, Australia.
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WAVE ENERGY
Wave Energies good points for being a good source
of energy Truly Renewable Most consistent of
the intermitted energy sources non-emitting endl
ess supply environmentally friendly Wave energy
bad points being a source of energy expensive
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WAVE ENERGY RATES
Power is produced at a cost which is very
competitive when compared to wind and solar
power. Moderately good waves will produce
electricity at about 15 cents per kWh. Wind power
ranges from 10-30 cents per kWh and solar can
cost up to 90 cents per kWh. In an ideal wave
climate, the cost is comparable to electricity
generated in coal-fire power stations. It avoids
the need for diesel, and in some cases, can
reduce costs by a factor of five. Between 100kW
and 1 MW could be generated by one Energetech
installation. With an average household using
about 0.5kW per day, this would be enough to
supply the normal requirements of between 200 and
2000 homes.
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OCEAN WAVE ENERGY
Ocean wave energy is a very good environmentally
friendly source and will defiantly be very useful
for the future. Thanks for looking at my GREAT
POWER POINT