Ocean energy usually refers to renewable energy stored in the ocean, including tidal energy, wave energy, ocean current energy, sea water temperature difference energy, sea salt salt difference energy, etc. The ocean can be rich in resources, widely distributed, clean and pollution-free, but with low energy density and strong regionality, which makes development difficult and has certain limitations. The way of development and utilization is mainly power generation, in which tidal power generation and small wave power generation technology have been put into practical use. Wave power generation uses the kinetic energy of the up and down movement of the sea waves. In 1910, France's Plessic invented the use of vertical motion of seawater waves to compress air, propelling wind turbines to generate electricity, sending 1 kilowatt of electricity to the shore, creating a precedent for humans to turn ocean energy into electricity. Various types of wave launchers of 60-450 kW have been developed.
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