Which one, photovoltaic or wind power, is less harmful to the environment?

Introduction Which one, photovoltaic or wind power, is less harmful to the environment? Both photovoltaic and wind power are currently recognized as new clean energy sources with little impact on the environment. However, although it is claimed to be clean energy, str

Which one, photovoltaic or wind power, is less harmful to the environment?

Both photovoltaics and wind power are currently recognized as new clean energy sources that have little impact on the environment.

However, although it is claimed to be clean energy, strictly speaking, whether it is photovoltaic or wind power, it will have a certain impact on the environment.

For example, photovoltaics will have the following impacts on the environment:

1. The layout of photovoltaic panels will take up a lot of space.

2. During the production process of photovoltaic panels, trichlorosilane and silicon tetrachloride will be produced, which are substances that have an impact on the environment and human health.

For example, wind power will also have an impact on the environment during the deployment process.

It is said that large-scale deployment of wind power will affect atmospheric circulation and cause changes in ambient temperature.

It is also said that large-scale deployment of wind power will affect the circulation of water vapor in the atmosphere and affect the distribution of rainfall zones.

Leaving aside whether the above statement is accurate, the two new energy sources of photovoltaic and wind power themselves have not yet achieved 100% no impact on the environment. ...it will have some impact to some extent.

Of course, compared with traditional energy sources, photovoltaic and wind power have very little impact on the environment and are environmentally friendly enough. This is why these two new energy sources and other new energy sources have such advantages. extensive development.

1. The overall overview of wind power is as follows: Around 2007, China’s wind power market was particularly open, but after 2011, due to excess wind power capacity, the State Council’s support for wind power Decline, until now, China's wind power market is very difficult, many companies are not performing well.

2. Technical level:

1) The main reason is that the reliability is too low. The general design life is 20 years. Major failures will occur in about 4 to 5 years of domestic operation. We As we all know, the maintenance cost of wind power equipment is extremely high.

2) There is another serious phenomenon: many domestic wind power equipment companies do not have independent research and development capabilities, and most of them buy foreign drawings and process them. Then we have a question, why the wind power equipment with the same drawing can operate for 10 years abroad but can only operate for four years in China. The reasons: a) The service environment of domestic and foreign wind power equipment is different, and the service environment in China is poor. It will accelerate the erosion of the equipment, thereby accelerating fatigue damage. b) Domestic manufacturing processes are not as good as foreign ones. It can be said that domestic wind power equipment manufacturing does not meet the design requirements.

3) Main damage conditions: the blades are mainly affected by environmental erosion and breakage; the speed increase box is mainly caused by fatigue damage of bearings and gears; the brakes are mainly caused by braking noise and material wear; the power grid is mainly caused by the failure of power generation. stability, causing fluctuations in the power grid.

3. New power generation method: The current innovation in wind power equipment types mainly focuses on the gearbox. What is more commonly used now is the doubly-fed speed-increasing box, that is, the low speed transmitted from the blades is passed through The speed increase of the gearbox is transmitted to the generator to generate electricity. This traditional equipment type will affect the reliability of the gearbox.The service life of the entire equipment system. The new wind power equipment is direct drive, that is, there is no speed increase box. In terms of the reliability of the entire equipment, the service life is more guaranteed, but the power generation efficiency needs to be studied.

Hope this helps!

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