Merve Cura - 19

The diagrams below show the design for a wave-energy machine and its location.

Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The diagrams illustrate the way in which energy produced by a wave-energy machine and the consequences of the location of the machine. Overall, the energy is produced with the turbines which are moved by both water and air flows. The amount of the produced energy depends on the location of the machine.

As it can be seen from the first diagram, the machine contains a gate to let water in by the wave, two large and two tiny chambers to regulate air and water flows. When the water is raised from the bottom to the upper chambers by a tide, at the same time the air is moved from top to the bottom water chamber to create more tide. The turbines are turned by this circulation which is created by water and air flows, and this movement is turned into energy by an electricity generator.

The second diagram demonstrates the possible locations of wave-energy machines and provides information about the outcomes of certain locations. If a machine is located far from the coast, its installation costs higher than the ones which are located closer to the coast. On the other hand, deeper locations are better to have a high energy output because of the existance of large waves.