Common energy types and energy classification [point] the understanding of common energy types includes: coal, oil, natural gas, ethanol, hydrogen, solar energy, nuclear energy, wind energy, electric power, chemical industry, water, tide and geothermal energy. The classification standards are different. Now, the following four categories are mainly described in different subcategories: renewable energy in the In nature, some of them can be recycled, called renewable energy, such as wind energy, solar energy, hydraulic power, biomass energy, geothermal energy, ocean energy and other non fossil energy.
Some non renewable energy in nature is called non renewable energy (once consumed, it can not be regenerated for hundreds or even thousands of years, such as coal, oil, natural gas and other fossil fuels At present, the most widely used energy on our planet can be divided into: clean energy, which does not pollute the environment in the process of energy use, is called clean energy, such as solar energy, wind energy, ocean energy, hydropower and geothermal. Non clean energy, which pollutes the environment in the process of energy utilization, is called non clean energy, such as coal, oil and natural gas With the development of science and technology, human can be a kind of non clean energy. The ultimate goal of human energy utilization is carbon free economy.
According to the degree of processing energy, it can be divided into: primary energy in nature; unprocessed natural energy conversion is directly called primary energy, such as coal, oil, natural gas, solar energy, wind power, hydraulic power, geothermal energy and nuclear energy The products that people need are called secondary energy, such as electricity, gas, steam and various petroleum products.
Many cities in the world are facing increasingly serious air pollution. A method to solve the problem of urban air pollution is suggested. In my opinion, reducing air pollution is facing a tough battle.
This war has led to a series of health hazards. The real way to solve air pollution is to replace fossil fuels with clean energy such as solar energy and wind energy, and to produce clean energy by solar energy and wind energy, and pollution of fossil fuel and other polluting energy can be greatly reduced. The excessive use of fossil fuels such as coal has led to the emission of pollutants such as nitrogen oxide and carbon dioxide.
According to official statistics, this is a major threat to air quality. The emission of carbon dioxide is up to million tons, which poses a serious threat to air quality. Therefore, using Taiyang energy and wind energy can effectively reduce the emission of pollutants from fossil fuels and significantly improve air quality; Secondly, renewable energy such as solar energy and wind energy are pollution-free and environmental protection well known.
Solar energy and wind energy are clean, free and inexhaustible energy, which provide energy for cooking, lighting, heating and refrigeration, and there is no direct emission. Therefore, to win the fight of air pollution, we must take some urgent measures immediately. Replacing fossil fuels with sustainable clean energy is a feasible alternative to fossil fuels.
New clean energy can greatly reduce air pollution in some parts of China, which deserves great attention.
With wind turbines, wind energy is constantly put into our homes. This paper uses the low-speed rated 5kW wind turbine permanent magnet. Due to the small amount of instability of the wind turbine, it starts to turn from the work, converting wind energy into mechanical energy, and then converting mechanical energy into electrical energy.
Its output voltage and current are constantly changing. The controller must be rectified by the regulator, and then be converted into DC power to charge the battery When the chemical energy is converted into AC, the battery can be used as long as the DC voltage is output to the corresponding voltage, which ensures the stable use. In this paper, the SCR trigger circuit is used to complete the selection of rectifier circuit to inverter power supply, and SG integrated inverter is used to realize the conversion process.