понедельник, 2 апреля 2012 г.

Generate electricity from wave power

The diagrams show a structure that is used to generate electricity from wave power.
Write a report for a university lecturer describing the information.
These two diagrams show a construction that allows electricity to be generated from wave power.

The structure is usually built by the sea on the side of the cliff or sea wall and consist of three main parts : a large chamber ,a vertical column and a turbine. The bottom end of the chamber is open to the sea and lets water in.The upper end is connected to the column, which is closed on the top. The turbine is installed inside the column and enables the generation of the electricity in two phases.

The first diagram shows how a wave comes into the chamber and push air in front of it in to the column.This current of air causes the turbine to turn ,hence electricity is generated.

The second diagram illustrates the next part of the process when wave retreats.The low water level decreases compression in the chamber ,so the air is sucked out of the column and turns the turbine again.As a result ,electricity continues to be produced.

In conclusion,we can see that this structure is useful as electricity is generated in both phases : entering and retreating of water.

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