People use thermal energy generated during the combustion of coal to convert it into electrical energy through electricity generation devices (including power plant boilers, steam turbines, generators and their devices auxiliaries). Among all the methods of producing electricity, the production of thermal energy is one of the main ones. the longest and most important story.
Coal has been used as fuel for 800 years. Coal has been widely used as a fuel for industrial production since the Industrial Revolution of the late 18th century. With the invention and use of the steam engine, coal was widely used as a fuel for industrial production, bringing unprecedented productivity to society and promoting the development of industry. Thus, coal, steel, chemicals, mining and metallemergency have developed, among others. . Coal has a high calorific value and the calorific value of standard coal is 7000 kcal/kg. In addition, coal has abundant reserves on earth, is widely distributed, and is generally relatively easy to extract, so it is widely used as a fuel in various industrial production.