a brief introdction
Ocean energy refers to various renewable energy sources contained in seawater, including tidal energy, wave energy, ocean current energy, seawater temperature difference energy, and seawater salinity. These energy sources are renewable and non-polluting, and are a new strategic energy source that needs to be developed and utilized.
Ocean Energy
Marine energy characteristics
1. The reserves of ocean energy in the total water body of the ocean are huge, while the energy per unit volume, unit area and unit length is small. That is to say, in order to get great energy, it has to be obtained from a large amount of seawater.
2. Ocean energy is renewable. Ocean energy is derived from the gravitational attraction between solar radiant energy and celestial bodies. As long as the celestial bodies such as the sun and the moon coexist with the earth, this energy will be regenerated and will be inexhaustible.
3. Ocean energy has a relatively stable and unstable energy. The more stable ones are temperature difference energy, salinity difference and ocean current energy. Unstable energy is divided into two types: regularity and irregularity. It is unstable but has regular changes in tidal energy and tidal energy. According to the law of tidal currents, people have compiled daily and tidal trends and tide forecasts, and forecast the tide size and trend strength at various times in the future. The tidal power station and the tidal power station can arrange the power generation operation according to the forecast table. Wave energy is both unstable and irregular.
4. Ocean energy belongs to clean energy, that is, once the ocean energy is developed, it has little impact on environmental pollution.
Wave power generation
According to scientists, the energy stored on the waves of the earth is as high as 90 trillion kWh. At present, maritime navigation buoys and lighthouses have been illuminated with electricity from wave generators. Large wave generator sets have also been introduced. China has also researched and tested wave power generation and made power generation devices for use with navigation lights. In the future world, every ocean will have a wave power plant belonging to our China. Wave Energy will make a great contribution to China's electricity industry.
Tidal power generation
According to the World Dynamics Conference, by 2020, the world's tidal power generation will reach 1,000-300 billion kilowatts. The world's largest tidal power station is the Lens estuary power station on the English Channel in northern France, with a generating capacity of 240,000 kilowatts. It has been in operation for more than 30 years. China has built a Jiangxia tidal power station in Zhejiang Province with a total capacity of 3,000 kW.
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