What does ocean energy mean?

The ocean is rich in natural resources and huge renewable energy. Rough waves, ebb and flow, water temperature at different depths and salinity difference at the junction of rivers and seawater all have great energy to use. In addition, abundant thermonuclear fuel and hydrogen can be obtained in seawater which accounts for about 70% of the earth's surface area.

Ocean energy mainly comes from solar energy. Its geographical distribution is broad, its energy is relatively stable, its changes have certain rules, and it can be accurately predicted. For example, the sea water temperature difference and ocean current change with the seasons, while the tides change periodically.

At present, the research and utilization of ocean energy in the world is still in its infancy, so ocean energy belongs to a new energy source to be developed and utilized. Among them, the tidal energy development technology is relatively mature and has entered the stage of technical and economic evaluation and engineering planning; The utilization of wave energy is in the experimental research stage; Engineering research on the utilization of marine thermal energy is under way; The utilization of ocean current and salinity difference energy is only in the stage of principle research.

China is rich in marine energy resources, and its development and utilization prospects are very broad. Chinese mainland has a coastline of over 65,438+800,000 kilometers and more than 5,000 islands. The coastline is about10.4 million kilometers, and the whole sea area is 4.9 million square kilometers. If converted into useful power value, China's marine energy resources can reach at least 654.38+0.5 billion kilowatts, which is equivalent to more than twice the total installed power capacity of China at present. At present, the development and utilization of ocean energy in China is only in the initial stage. Some coastal areas have developed various experimental power generation devices and built experimental tidal power stations, laying a preliminary foundation for further development and utilization of ocean energy in the future.

The total reserves of marine energy in the world are about hundreds or even thousands of times of the annual energy consumption in the world. This ocean energy is an inexhaustible new energy source. In the near future, ocean energy will play a huge and important role in benefiting mankind.