Boiler is a kind of energy conversion equipment, to the boiler input energy in the form of chemical energy in the fuel, electrical energy, high-temperature flue gas heat energy, etc., and after the boiler conversion, the output of steam, high-temperature water or organic heat carriers with a certain amount of thermal energy.

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 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. Boilers that produce steam are called steam boilers, often referred to as boilers, and are mostly used in thermal power plants, ships, locomotives and industrial and mining enterprises.