“The tidal mechanism leverages the perennial movement of raising and lowering of sea flow.”
Considered a clean source of energy and self – sustainable , tidal energy is the mechanism that generates energy through the movement of water masses of the oceans .
Through maritime movement, it is possible to obtain two types of energy : kinetic energy of the currents from the tidal movement , and potential energy , by the difference in height between high and low tides.
The scheme builds on perennial tidal movement of raising and lowering of sea flow .
Therefore, the exploitation of tidal power requires dams , similar to those used in hydropower plants, to be built , and that the gap between the tides exceeding 7 meters. With dams , through the movement of high and low tides , turbines connected to a conversion system capable of generating electricity are triggered
France is a pioneer on the development of this mechanism . The first project producing electricity through tidal was developed in 1966 in La Rance, with a dam of 710 meters. Currently the energy generated by tidal is used mainly by Japan , Hawaii and England, but there are plants in the planning stages and construction in Canada, Mexico, Argentina, India and Australia.
Brazil has great potential for energy production using this mechanism , by its favorable geographical features, the states of Maranhão , Pará and Amapá , noted by having tides with amplitudes of up to 8 meters. Despite this there is no tidal power plant in Brazil .
According to the Ministry of the Ambeinte , the use of renewable energy can be an option for the very near future , but must be taken into account in this type of project , potential environmental impacts associated with the construction of the plants , besides the need economic analysis of the viability of the system .
Private initiative in partnership with the Government of the State of Ceará, invested in a project of the Coordination of Postgraduate Engineering (COPPE), Federal University of Rio de Janeiro (UFRJ) Program, within the program of R&D Aneel. Considered a pilot project for low environmental impact, the Mill Wave is in operation, but in testing phase at the Port of Pecém pier.
The Government of the State of Ceará, through the Department of Infrastructure ( Seinfra ) was responsible for the work of preparing the area 200 square feet in Terminal Multiple Utilities Pecém breakwater ( Tmut ), which today houses the pilot plant production of electrical energy from ocean waves , with a nominal power of 100 kilowatts using an accumulator and a hyperbaric chamber storing water under high pressure , such as those generated by the waterfalls of existing dams and in the seabed.
The whole mechanism is made in modules, which can later be added to increase the potency of the plant, just adding more floats. The device also attaches a prototype desalination plant seawater.
Source: Ministry of EnvironmentSite: www.mma.gov.br and tribunadoceara.uol.com.br