OCEAN WAVE ENERGY_1_ by pptfiles



There are three types of wave energy generators:
Floats 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 turbine

Wave 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

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.

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.

Wave Energies good points for being a good source of energy Truly Renewable Most consistent of the intermitted energy sources non-emitting endless supply environmentally friendly Wave energy bad points being a source of energy expensive

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.

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

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