Scientists have developed various mechanisms which convert the kinetic energy of tides into electricity.
An example of such a mechanism will be seen later on this page.
Most of the devices that use the tide to produce electricity have strong resemblance to windmills.
The rotating part consists of a shaft, at the one end of which the wings are attached. The tide rotates the wings and therefore the kinetic energy of the tide is transmitted to the axis (rotating shaft) where it is converted into rotational kinetic energy. The generator (which is connected to the rotating axis) converts the kinetic energy into electrical energy.
These mechanisms are relatively new and therefore have not been studied thoroughly.
We do know that:
- they do not create solid or gaseous wastes that pollute the environment or contribute to the greenhouse effect.
- They have low environmental impact such e.g. a small increase in water temperature occurs.
- As every new technological device they have high constructions and initial installation cost. (The same had happened when the first windmills, or the first solar farms appeared, but over time the cost fell considerably, while their performance was greatly improved).
"Such mechanisms can be installed only in certain regions were the tide is strong (That means that although Greece is surrounded by sea and has many islands such systems can not install.)
"such mechanisms should be placed in areas that do not affect navigation, fishermen, tourism, etc.
Care should be taken so as seaweed, garbage, pieces of wood etc. do not reach the engine.
Tower's height 40,7 meters
Rotor diameter 16 meters
Power 1200 KW (2x600)
Water minimum speed 2,4 meters/second
© 2003, Despina M. Garyfallidou Athens-Greece