Is tidal power generation generated by the force of rising tide or falling tide?

Tidal power generation is a combination of high tide and low tide in the morning and high tide and low tide at night. Tidal power generation works by using the water level difference between high tide and low tide twice a day. The greater the tidal range, the greater the seawater flow.

In a bay or tidal estuary, you can see the sea or river fluctuating twice a day, which is called tide in the morning and sunseeker at night. Tide, as a natural phenomenon, provides convenience for human navigation, fishing and salt drying.

This phenomenon is mainly caused by the tidal force of the moon and the sun and the rotation effect of the earth. At high tide, a large amount of seawater flows in, with great kinetic energy; At the same time, the water level gradually rises, and kinetic energy is converted into potential energy. At low tide, the seawater rushes home, and the water level drops one after another, and the potential energy is converted into kinetic energy. The kinetic energy and potential energy of seawater in motion are collectively called tidal energy.

Tide is a kind of renewable energy with huge reserves, inexhaustible, no need for mining and transportation, clean and pollution-free To build tidal power stations, there is no need to emigrate or flood the land, and there is no problem of environmental pollution. In addition, it can also be combined with tidal power generation to develop comprehensive utilization projects such as reclamation, aquaculture and marine chemical industry.

The main utilization mode of tidal energy is tidal power generation. The principle of tidal power generation is similar to that of ordinary hydropower generation. Leaving the reservoir, seawater is stored at high tide.

In the reservoir, it is stored in the form of potential energy, and then the seawater is released at low tide, and the turbine is driven by the high and low water level difference to drive the generator to generate electricity. The difference is that seawater is different from river water, and the accumulated seawater has a small drop, but a large flow and is intermittent, so the turbine structure of tidal power generation should be suitable for the characteristics of low head and large flow.

Tidal power generation is a kind of hydroelectric power generation. Dams, gates and factories are built in conditional bays or tidal ports to form reservoirs, so that the water level of the reservoirs and the tidal level in the open sea form a certain tidal difference (i.e. working head), thus driving the hydro-generator set to generate electricity.

The technology related to tidal power generation has made rapid progress, and a variety of mechanical equipment has been developed to convert tidal energy into mechanical energy, such as propeller turbine, axial flow turbine, open cycle turbine and so on. Japan even began to use satellites to provide tidal information. The utilization of tidal power generation is becoming more and more mature and has entered the practical stage.