Because movement involves friction.
According to the data query of Daokeba, because there is friction in movement, the wind turbine will make noise, which is too loud when the wind is strong and quiet when the wind is low.
Wind turbines are electrical equipment that convert wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current.
Why are the blades of wind energy generators so small?
Wind power is a clean energy technology that uses wind energy to generate electricity. Its power generation efficiency is affected by many factors. Influences include the following aspects:
Wind speed: Wind speed is one of the most important factors affecting the efficiency of wind power generation. The higher the wind speed, the faster the wind turbine spins and can produce more electricity. Normally, wind turbines start generating electricity when the wind speed is above 3 meters per second, and the efficiency of wind power generation is highest when the wind speed is above 10 meters per second.
Wind direction: Wind direction also affects the efficiency of wind power generation. Different wind directions will cause the wind turbine blades to be affected by different wind forces and directions, thereby affecting the efficiency of power generation.
Altitude: Altitude also affects the efficiency of wind power generation. In areas with higher altitudes, the air density is lower, and the wind force on the wind turbine blades is also smaller, which in turn affects the efficiency of power generation.
Temperature: Temperature also affects the efficiency of wind power generation. When the temperature is higher, the air density is lower, and the wind force on the wind turbine blades is also smaller, which in turn affects the efficiency of power generation.
Wind turbine design and quality: The design and quality of a wind turbine also affects its power generation efficiency. Excellent design can enable wind turbines to generate electricity efficiently at low wind speeds, and high-quality materials can extend the service life of wind turbines.
The parameters required for wind power calculation can be provided by the Xihe Energy big data platform (xihe-energy).
The thinness is to comply with the principle of aerodynamics. But it is really not small, some blades are fifty or sixty meters long. Wide blades and multiple blades are suitable for low wind speed, Low-speed wind turbines have low efficiency. Wind turbines mostly use low-solidity ratio wind turbines with fewer blades and narrow blades, which can operate with higher efficiency and high speed. Generally speaking, domestic...