潮汐能（Tidal energy）.doc

潮汐能（Tidal energy） Brief introduction to the tides caused by changes in the gravity of the moon, the tides cause the sea surface to rise periodically, and the energy generated by the fluctuations of the sea and the tides is called tidal energy. Tidal energy and tidal energy and tidal volume is proportional to, or that is proportional to the square of the tidal range and the reservoir area. Compared with hydro power, the energy density of tidal energy is very low, which is equivalent to the level of water, hair and electricity. Tide, as a natural phenomenon, provides convenience for human navigation, fishing and salt drying. It is also worth pointing out that it can also change into electricity and bring light and power to people. There is great energy in the tides of the applied seas. In the process, a surge of seawater has great momentum, while the increase of sea level, the huge water kinetic energy into potential energy; at low tide in the process of water rushing to the water level gradually reduced the potential energy into kinetic energy. The larger value of the world tidal range is about 13 15m, but generally speaking, the average tidal range has practical application value in more than 3m. Tidal energy varies from place to place, and different regions often have different tidal systems, and they are all from the deep ocean tidal waves Acquire energy, but each has its own unique characteristics. Although the tides are very complex, they can be accurately predicted for tides everywhere. The use of tidal energy is mainly power generation. Tidal power is the use of the Bay, estuary and other favorable terrain, building dam, reservoir formation, in order to facilitate the accumulation of seawater, and the construction of hydroelectric power plant in the dam or dam next generation by hydro generating unit. It is possible to extract energy from the tides only when there is a spring tide, energy concentration, and where geographical conditions are suitable for constr