At present, the main forms of heat exchangers popular in the market are as follows:
1. Fully welded plate heat exchanger: The fully welded plate heat exchanger has no gasket, and all the plates are welded with argon arc. The main working conditions are high temperature and high pressure, and the rubber pad can not adapt to the working conditions. The disadvantage is that it cannot be disassembled and cleaned and cannot be repaired.
2. Brazed plate heat exchanger: brazed plate heat exchanger also has no gasket, all the plates are melted and welded with copper foil at high temperature. The use and disadvantages are similar to the all-welded plate heat exchanger. They are usually small in size.
3. Shell and tube heat exchanger: the most traditional heat exchanger. It is composed of a shell and a number of metal tubes inside. Advantages: high temperature resistance, high pressure. The disadvantages are troublesome cleaning, large volume and high cost.
4. Spiral plate heat exchanger.
5. Wing heat exchanger: The main working condition is the heat exchange between air and gas or liquid.