The diagrams illustrate two ways of turning energy into electricity. They both introduce simple mechanical devices that use wave energy and water. The former method needs a construction consisting of a system of pipes, a turbine, a generator, a piston, a pump and a storage for water. The latter one involves a turbine and a generator as well. The main difference is that the first way works by shifting water flow, and the second way by generating in and out air flow.
Method one comprises a basic pump construction. At first, wave flow forces the float with the piston to push up, which causes pressure in the pump. The intake valve opens, and the water starts to go up the intake pipe right to the storage tank. After that, the pressure in the storage tank forces the water to go down the outlet pipe, which causes the rotation of the turbine, and this is the way we get energy.
Method two is much easier at the first sight, as it doesn’t require so many devices. There, we look at the type of power the device needs. This time, it’s all about air movement, although we start again with wave power. It creates the water flow in the low storage, and air releases out. Then, air is pulled into the storage, and the flow forces the turbine to spin. The point is that the generator is connected to a turbine, so the rotation turns the generator on.
These two methods helps us to generate electricity using wave energy, so they could be a good examples of sustainable energy.