What is the best way to take energy from the sea waves?

Answer 1

There's different ways, some are already in use others are possible future methods. Some of them are as follows:

One method involves barrages - when the tide is high a barrage is closed across a river, lock or bay. As the tide goes out the water remains trapped behind the barage and can then be released driving turbines at it flows out of the reservoir.

A similar scheme uses a permenant barage, as the tide comes in it runs through sluices in the barage driving turbines. At high tide the sluices are closed. When the tide falls the sluices are opened again and the trapped water flows out, again driving turbines.

There are several similar variations including man made reservoirs, at high tide the water floods into the reservoir and is trapped when the tide recedes.

Another approach involves the use of pontoons floating on the water - as waves come and go the pontoons rise and fall and this drives turbines to generate electricity.

Another scheme involves 'blow holes'. When waves crash against cliffs or sea-water is forced into clefts in the cliffs the water is forced upwards, by adapting natural blow holes or drilling ones through the rock it's possible to harnass the power of the water being forced upwards through the hole as the waves come in.

A system below the seas involves using the naturally occuring ocean currents such as the Gulf Stream to drive turbines.

Tidal power is big business in Russia which generates more electricity this way then the rest of the world combines. Some schemes up and running in the US are those at Passamaquoddy Bay, Knik Arm and Turnagain Arm.

Answer 2

In Ireland they got some big iron balls that are anchored to the sea bottom,the rocking motion of the waves moves a pendulum .like these pendulum power watches ,only much bigger and this produces electricity

but in many places sea water is forced with great strengh through the rocks ,there must be ways to harnass that

Answer 3

one design I heard of is done on the cliffs next to the ocean. You bore out a hole from the top of the cliff into the surf zone (going through the earth). That way when the surge or wave enters the hole it pushes air up through the hole (if it's set up right there's a very powerfull wind that comes through). In the hole you have a wind turbine or wind mill that turns to make electricity.

Answer 4

The French are already doing this...

Google "France, hydro-power" And you'll see their hugely successful tidal hydro power plant.

Answer 5

why'd we want to do that? it doesn't sound like a very efficient form of energy...