1. Wind energy
Wind energy is a new energy source with great potential At the beginning of the 18th century, a violent wind swept across Britain and France, destroying 400 wind turbines. 800 houses, 100 churches, more than 400 sailboats, thousands of people were injured and 250,000 large trees were uprooted.
Simply speaking of uprooting a tree, wind generates 10 million horsepower (or 7.5 million kilowatts; one horsepower is 0.75 kilowatts) in just a few seconds! Earth's wind resources that can be used to generate electricity are approximately 10 billion kilowatts, almost 10 times the current hydroelectric generation capacity in the world.
Currently, the energy produced each year by burning coal worldwide is only a third of the energy provided by wind power in a year. This is why national and foreign governmentsangers attach great importance to the use of wind energy to produce electricity and develop new energy sources.
2. Seed diffusion
Wind is one of the environmental factors in agricultural production. Moderate wind speed plays an important role in improving the environmental conditions of agricultural land. Near-surface heat exchange, evapotranspiration from agricultural land, and carbon dioxide and oxygen transport processes in the air accelerate or intensify as wind speed increases. Wind can spread pollen and plant seeds, helping plants pollinate and reproduce.
Wind energy is a widely distributed and inexhaustible energy source. The monsoon prevailing in China is beneficial for crop growth. On the Inner Mongolia Plateau, the Northeast Plateau, the Southeast Coast and the mountainsInland areas, there are abundant wind energy resources that can be developed and used as energy.
3. Information indicators
Wind data is one of the important meteorological data, both in theoretical research and in various sectors of national economic construction, such as agriculture, transportation and construction. Industry, water conservation projects, reclamation and other departments are all indispensable. Wind is the horizontal movement of air and is a vector (or vector) represented by direction (wind direction) and speed (wind speed).
Wind direction refers to the direction the wind is coming from. Except for calm wind, it is expressed in 16 directions. Wind speed refers to the ratio of the distance the air travels to the time it takes to travel the distance. The unit is expressed in meters per secondof. It is observed regularly (the base station observes 4 times per day and the base station observes 24 times). times a day). Take a whole number and record it yourself with one decimal place.
Detailed information:
The cost of using wind to generate electricity has decreased significantly. Even without other external costs, the cost of using wind energy in many suitable locations is now lower than that of wind energy. fuel. The internal combustion engine produces electricity.
The annual growth rate of wind power generation was around 25% in 2002, and today it is growing rapidly at 38%. In 2003, the growth of wind power in the United States exceeded the average growth rate of all producers.
Since 2004, energyWind power has become the cheapest of all new energy sources. By 2005, the cost of wind power had fallen to 1990A fifth of that figure in the 1990s, and with the use of high-power generators, the downward trend will continue.
Baidu Encyclopedia - Wind
Baidu Encyclopedia - Wind Energy
The wind turbine is a device Who converts wind energy into electrical energy. It drives a generator to produce electricity through the rotation of a wind turbine. The working principle of wind turbine mainly includes three processes: wind energy conversion, mechanical energy conversion and electrical energy conversion.
1. Wind energy conversion
Wind is the result of atmospheric movement on Earth and has enormous energy. The process of converting wind turbines using wind energy involves convertingwind energy into kinetic energy on the wind wheel. When the wind blows through the rotor of the wind turbine, the rotor rotates due to the force of the wind.
2. Mechanical energy conversion
The rotation of the wind wheel will cause the rotor inside the generator to rotate. The rotor is made up of magnets and coils. As the rotor turns, the magnetic field also changes. According to Faraday's law of electromagnetic induction, changes in the magnetic field will induce an electromotive force in the coil. This electromotive force is transmitted to the generator output through the wire, forming an electric current.
3. Conversion of electrical energy
The current transmitted through the wire will then be converted into electrical energy via the transformer. Transformers convert low voltage current to high voltage current so that electrical energy can be delivered more efficiently. FinallyUltimately, electrical energy is transmitted via transmission lines to users for their use.
Steps of wind turbine operation
1 Site selection
Site selection of wind turbines is very important. Generally speaking, you should choose an area with high and stable wind speeds to ensure that the wind turbine can continue to produce electricity. At the same time, it is also necessary to consider the surrounding environmental factors, such as the impact of terrain, buildings, etc. on the wind.
2. Installation Foundation
Once the site selection has been determined, the installation of the wind turbine foundation must be carried out. This includes work such as digging foundation pits and pouring concrete. The stability of the foundation is crucial to the normal operation of wind turbines.
3. Install the wind wheel and generator
Once the foundation installed, the wind wheel and generator must be installed on the foundation. Wind rotors generally consist of several blades that must be installed perpendicular to the wind direction to maximize the use of wind energy.
4. Connect the transmission lines
After the installation is completed, the wind turbine must be connected to the transmission lines. This requires wiring and connection work. Ensuring the reliability and security of connections is essential to the transport of electrical energy.
5. Operation and monitoring
After the installation and connection are completed, the wind turbine can start operating. At the same time, operational monitoring is necessary to detect and resolve possible problems in a timely manner to ensure the normal operation of wind turbines.