Heat exchanger (also known as the heat exchanger or heat exchange equipment) is used to make the heat from the hot fluid is transferred to the cooling fluid, in order to meet the requirements of the device technology, is a kind of industrial application of convective heat transfer and heat conduction. Heat exchanger can be classified by different ways. According to its operation process can be divided into the wall type, mixed type, regenerative (or regenerative) three categories; according to the compact degree of the surface can be divided into compact and non compact type two class.