The thinness is to comply with aerodynamic principles. But it is really not small, some leaves are fifty or sixty meters long. Wide blades and multiple blades are suitable for wind turbines with low wind speed and low rotation speed, and their efficiency is low. Wind turbines mostly use low solidity ratio wind turbines with few blades and narrow blades, which can operate with higher efficiency and high speed.
Generally, the height of wind turbines in China is about 65 meters. Blades are the main components of wind power generation. The larger the swept surface and the lighter the weight, the more physical electric energy is generated. In this way, the electricity generated More and more.
The larger the blade area, the greater the resistance, and it is easy to be destroyed when a hurricane occurs. And the greater the resistance, the higher the energy loss. Blades are one of the most expensive parts of the entire windmill, which can save costs. Assuming that the blade length is 34 meters, when the wind is strong, the blade tip speed exceeds the speed of sound, causing some special air waves.
The leaves of wind power plants grow between 34 meters and 88 meters long. The blade length of a wind turbine will vary depending on the size and model of the wind turbine. Small wind turbines have blade lengths of several meters, while large commercial wind turbines can have blade lengths of tens of meters. Wind power of 1.5 megawatts (MW) For generators, the blade length is between 34 and 45 meters, and the corresponding tower height (hub height) is 65 to 100 meters. For a 2 MW wind turbine, the blade length is between 48 and 59 meters, and the corresponding hub height is between 48 and 59 meters. The height of a 3-MW wind turbine is 80 to 100 meters, and the blade length is between 44 and 59 meters. The corresponding hub height is 80 to 110 meters. The blade length of the largest known wind turbine in the world has reached 88 meters, made in a factory in Denmark. Wind power is the process of using wind power to drive wind turbines and then converting the wind energy into electricity. This clean energy technology is widely used around the world because it helps reduce dependence on fossil fuels and reduces greenhouse gases. emission.