According to the sound radiation mode, the noise produced by wind turbines can be divided into aerodynamic noise, surface radiation noise and electromagnetic noise. Among them, the surface radiation noise of the generator is mainly mechanical noise, and aerodynamic noise is the main noise source.
Aerodynamic noise is caused by the unstable gas process, that is, by the disturbance of the gas and the interaction between the gas and objects. Aerodynamic noise radiated directly to the atmosphere, including intake noise, exhaust noise, and cooling fan noise. ?
Mechanical noise, generally the noise produced by vibrations caused by the rotation of the machine body, is called mechanical noise. It should be higher when driving at high speed.
Electromagnetic noise is generated by the high-speed rotation of the generator rotor in the electric fieldromagnetic.
Therefore, there will be a roaring sound when the wind turbine is working.
Wind energy production will harm the environment, harm the climate and cause noise pollution. The details are as follows:
1. Wind energy production will harm the local ecology, including destroying vegetation, changing topography, causing soil erosion and desertification.
2. Wind energy affects the local climate. Wind energy uses wind energy present in the atmosphere. According to the law of conservation of energy, the consumption and production of one type of energy must produce or consume another type of energy. . Therefore, wind turbines The process of generating electricity is inevitable.
3. The environment around the wind farm is good, so it will become a paradise for many birds, but a large number of birds will be injured by thewind turbines.