The boiler is a kind of energy conversion equipment, the energy input to the boiler is the chemical energy in the fuel, electrical energy, the boiler output has a certain thermal energy of steam, high temperature water or organic heat carriers. The original meaning of the pot refers to the water container heated on the fire, the furnace refers to the place where the fuel is burned, the boiler includes two major parts of the pot and furnace. Boiler produced in the hot water or steam can be directly for industrial production and people's lives to provide the required thermal energy, can also be converted to mechanical energy through the steam power plant, or then through the generator will be converted to electrical energy mechanical energy. Provide hot water boiler is called hot water boiler, mainly used for life, industrial production also has a small number of applications. The boiler that produces steam is called steam boiler, often referred to as boiler, mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises.

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