The plate heat exchanger is a heat exchanger which is formed by pressing a thin metal plate into a heat exchanger plate having a certain corrugated shape, and then stacking and fastening with a splint and a bolt. A thin rectangular channel is formed between the various sheets, and heat is exchanged through the heat exchanger plates. The working fluid flows through the narrow, tortuous passage formed between the two plates. How to enhance the thermal efficiency and strength of the plate heat exchanger?
The first is to increase the plate heat transfer area, which is the simplest, most direct, and most used way to increase the heat transfer efficiency and heat transfer intensity of the heat exchanger. Because we increase the heat transfer area, there will be better heat transfer opportunities and effects when the hot and cold fluids are in contact with the plates.
The second is to increase the temperature difference between hot and cold fluids. This method is also used by many people, but this method also has a shortcoming, that is, our cost will increase. Therefore, when adopting this method, many people are generally determined by the actual situation.
The requirements of the last method are higher because this is a requirement for the material of the heat exchanger. If we use a heat exchanger material with a relatively high heat transfer efficiency, the heat loss during heat transfer is relatively small.