The fixed shape of the windmill blades (one side is higher and the other is lower than the wind direction) allows the wind to blow in one direction (up and down) on the surface of the blades , thus changing the direction of the passing wind. If the wind is given a force in one direction, then the wind also gives the fan blades a force in the opposite direction. The wind also exerts a reaction force on the fan blades that attach the switch.
The blades are fixed on the windmill shaft, so that the force exerted by the wind on the blades is converted into shear stress of the windmill through the fixed blades, so that the windmill turns. Therefore, the stronger the wind, the greater the steering force the blades give to the wind. Accordingly, the greater the steering force that the wind gives to the windmill, the faster the windmill spins.
The principle of productionwind energy uction:
1. Wind energy is used to rotate the blades of the wind turbine, then the increase in speed is used to increase the rotation speed to promote the generator to produce electricity.
2. Depending on the wind technology being considered, electricity can be produced with just a gentle breeze. Wind energy is attracting widespread attention around the world because it poses no fuel problems and does not produce radiation or air pollution.
Why do wind turbines intended for wind energy production have three blades?
82m, 77m, 90m.
The length of wind turbine blades is generally: 1. Different fan models are different, with diameters of 82, 77 and 90. In meters, 1.5 MW fan turbines will from 65 m to 88 m, including IECI category: 65 m, 70 mIECII category: 77 m, 82 mIECIII category: 82 m, 86 m, 88 m2MW 2. Thetotal diameter of the turbine is now generally between 80 meters and 105 meters or; yes, but the length of the blade is 40 or 50 meters.
The reason why wind turbines for wind power generation have three blades;
1. Three blades can improve the wind sweeping efficiency, and the three blades can also maintain the balance of wind energy. wind turbine.
2. The number of blades of the wind turbine is 3, which is the optimal result under the overall consideration and action of several factors, mainly optimization and balance between aerodynamic efficiency and structural complexity.
3. The three-part page turner determines low manufacturing and maintenance costs and ease of use.