Heat exchanger is a part of the hot fluid heat transfer to cold fluid equipment, also called heat exchanger. Its main function is to guarantee the technological process of medium required by the specific temperature. It can be in different temperature between two or more fluid heat transfer between the material and the heat by the higher temperature of fluid is passed to the low temperature of fluid, the fluid temperature can reach the indexes of the flow regulation, to meet the needs of the process conditions and at the same time, the heat exchanger is one of the main equipment of energy efficiency.

Heat exchanger is used widely in the daily life such as heating radiator, condenser in the turbine unit and the oil cooler on the space rocket, etc., In petroleum, chemical industry, light industry, pharmaceuticals, energy and other industrial production of heat exchanger is often used as the fluid heating in low temperature or the high temperature cooling fluid, the liquid into steam or the steam condensed liquid. Heat exchanger is a unit equipment, such as heater, cooler and steam condenser, etc.; Heat exchanger is a unit equipment, such as heater, cooler and steam condenser, etc.; Heat exchanger is important in the chemical production unit equipment, according to statistics, the tonnage of heat exchanger accounted for about 20% of the entire process equipment or even as high as 30%, its importance cans be imagined.