It is in the 60s when tidal energy arises. Currently, this energy has continued to be developed, with different mechanisms to take advantage of it, although it is only possible to generate it in very small quantities. This is due to the fact that sufficiently advanced technologies are not available to be able to obtain an optimal use of it and replace traditional energies.
If you want to learn more about this type of energy, in addition to knowing how tidal power plants take advantage of the tide to generate energy, keep reading this interesting article by Green Ecologist because here we talk about what is tidal energy and how does it work.
We call tidal energy, ocean energy or marine energy to the energy that is obtained with the use of movement produced by the tides, that is, when they rise and fall. The energy that is generated in this way naturally is used by the turbines that, when activated, move the mechanical assembly of the alternator and, thus, electrical energy is produced.
It is important to mention that this energy is sometimes confused with the wave energy or also call wave energy. Wave energy is that produced by the movement of the waves and tidal energy by the movement of the tides, so they are not the same although both are produced in the sea. Here you can learn more about what is wave energy.
To continue learning about marine energy that uses the tides, in the next section we will explain in detail how tidal energy is produced and we will continue talking about its characteristics and some examples of power plants.
The best places to install a tidal power plant are in an estuary, a bay or a river where seawater penetrates and there is a difference of at least 5 meters between high tide (maximum sea level) and low tide (minimum sea level). Once the location for the head office is chosen, that's right how tidal energy works:
There are many characteristics of tidal energy, within them we find:
In the following article you can know the Advantages and disadvantages of tidal energy.
The location of the dams is a crucial element for it to be feasible to use this type of energy, some examples of tidal power plants are:
It is located on Lake Sihwa located 4 km from the city of Siheung, installed on the edge of an artificial lake facing the sea. It was commissioned in 2011. It is currently the largest tidal power plant in the world and generates unidirectional power twice a day. It has 10 turbines that have the capacity to produce 552.7 GWh / Year, being able to supply 500,000 inhabitants for domestic activities.
The plant is located on the estuary of the River Rance in Brittany. Its facility features a dam and a dike, spanning more than 22 square kilometers. It is the first tidal power station to be installed in the world, being put into service in 1996. Currently it continues to generate energy and is the second largest in the world, being able to cover 60% of the energy needs of the Brittany region during the year. The tides of this plant have an average of 8 meters, and it has 24 turbines producing 540 GWh / Year.
It was commissioned in 1984 and the tides have a mean range of 10.8 meters. It only has 1 turbine installed that produces 30 GWh / Year. The turbine that it uses has been undergoing experimentation since 1984, being 18 MW with a consumption of 400 m3 / s and, like the Sihwa plant, it works in a unidirectional direction.
Below you can watch a video with a summary about tidal energy and learn more.
If you want to read more articles similar to Tidal energy: what it is and how it works, we recommend that you enter our category of Renewable Energies.Bibliography