Assoc. Prof. Amirhamzeh Farajollahi
Navid Nasab
Section Collection Information
Dear colleagues,
More than 70% of the earth's mass is made up of oceans.The energy stored in the oceans includes thermal power, kinetic energy (tides and waves), chemical power, and biomass. Oceans are a renewable energy source, with kinetic energy and salinity and temperature gradients being harvested by tidal currents and wave generators. Days, months, and wind speeds throughout the year all affect how well tidal and wave power stations operate. In deep seas, water waves are strong, whereas they are modest on shallow coasts. Wave amplitudes, which are controlled by wind speeds, are what determine how well wave generators operate. During winds and storms, water waves might become deadly. Tidal wave and thermal power abilities were previously estimated to be 22,000, 2000, and 87600 TWh/y, respectively, by gravity, wind, and sunlight. To generate electricity, tidal power plants rely on the erratic rise and fall of the tides in rivers and seas.
Tidal plants may be divided into three categories: tidal barriers, barrage tidal plants, and tidal turbines. Surface waves and pressure variations close under the water's surface of the seas and oceans immediately collect the energy of the waves of the oceans. The main causes of ocean, sea, and river water level changes are caused by four forces: the earth and moon's gravitational pull, the combined impact of the moon and earth's centripetal force, and the moon and earth's centrifugal force.Ocean wave generators have a very modest output, however, tidal range stations with a range of four to eleven meters may generate a lot of electricity. Ocean thermo-electric generators (OTEG) and ocean thermal energy conversion (OTEC) systems may be used to harness the abundant heat energy of the ocean. Close-open Rankine cycles, thermoelectric generators, and osmotic systems can all be used to capture ocean thermal energy.
Section Editors
Assoc. Prof. Amirhamzeh Farajollahi
Navid Nasab