Device for converting wave energy into electrical energy

It is a floating device tethered with chains to piles driven to ocean bottom. The wave action raises the heavy partially buoyant piston that drives the overhead crankshaft by half turn. The receding wave drops the piston completing the balance half turn. One revolution is obtained for every wave. Using gear box and generator the current is produced continuously.



Detailed description of the working of Indian wave energy device (iwave)


  Inventor:
 
  T.SAMPATH KUMAR
  651, 5th Block, Jayanagar,
  Bangalore - 560 041. INDIA
  TEL :(080) 26591524, 26595314
  Mobile : 9449767543
  E-mail : sampath651@hotmail.com
            sampath@nualgi.com

IWAVE
WAVE ENERGY DEVICE (PATENT-WIPO NO: WO2007/125538) To View Patent Click Here

Sea wave energy has the highest concentration of renewable energy.
Sea waves are the result of the concentration of energy from various natural sources like sun, wind, tides, ocean currents, moon, and earth rotation.
Waves originate from wind and storms far out to sea and can travel long distances without significant energy loss, power production is much steadier and more predictable. This reduces project risk.
Waves near land tend to be parallel to the coast.
Wave energy contains roughly 1000 times the kinetic energy of wind. Hence it allows smaller and less conspicuous devices to produce power.
Wave energy varies as the square of wave height whereas wind power varies with the cube of air speed. Water being 850 times as dense as air results in much higher power produced from wave averaged over time.
Theoretically you can extract 40 MW of power per km of coast where there are gentle waves (say 1 M height) and 1000 MW per km of coast where the wave height is 5 M.
Unlike wind and solar, power from sea waves continues to be produced round the clock whereas wind velocity tends to die in the morning and at night. Solar power depends on sun and cloud cover.
The problem with sea waves is that they have very high force at low speeds whereas for electricity generation you need higher speeds. The design of the device to do this conversion is most crucial to the economics.
The prior art has several devices that are extremely complex with large installation costs as compared to the useful energy produced. For more details on other devices please do Google search on sea wave energy devices.

Advantages Of IWAVE
It can be made a floating device tethered with cables/chains to piles driven to the sea bottom.
It can be positioned approximately 500 M from the seashore where the waves rise up above the sea level.
It can be moved to places where adequate wave energy is available.
The equipment is economical to produce, install and maintain.
Cost of energy produced is cheap and competitive to conventional sources of energy.
Directly converts kinetic and potential energy in the wave to mechanical and electrical energy.
In addition the device will be eligible for carbon credits that can be traded in the international market.
The device is eligible for accelerated depreciation in the hands of the buyer.
A 500 KWH unit having 2 nos X 250 KW on either side could be factory made and installed in sea.