1. The larger the area, the greater the resistance and will be easily destroyed in a hurricane. And the greater the resistance, the greater the energy loss.
2. The blade is one of the highest costs of the entire wind turbine, which can reduce costs.
3. Based on a blade length of 34 meters, when the wind is strong, the speed of the blade tip exceeds the speed of sound, causing special air waves. I'm not an expert, so I can't explain it. more clearly.
4. It seems that the 120 degree angle is also good for stress.
Slimness must respect aerodynamic principles. But it's really not small, some leaves are fifty or sixty meters long. Large and multiple blades are suitable for wind turbines with low wind speed and low rotation speed, and their efficiency is low. Wind turbines mainly use low-speed wind turbinesrt strength with few blades and narrow blades, which can operate with higher efficiency and high speed.
Generally, the height of wind turbines in China is around 65 meters. Blades are the main components of wind power generation. The larger the area swept and the lighter their weight, the more physical electrical energy is generated. In this way, electricity produced More and more.
The larger the surface area of the blade, the greater the strength and it is easy to destroy in a hurricane. And the greater the resistance, the greater the energy loss. The blades are one of the highest costs of the entire windmill, which can help reduce costs. Assuming that the length of the blade is 34 meters, when the wind is strong, the speed of the blade tip exceeds the speed of sound, causing special air waves.