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Classification of heat exchangers
Mar 30, 2020

According to the heat transfer mode, heat exchangers can be divided into three categories: direct contact heat exchanger, regenerative heat exchanger and interwall heat exchanger.

 

Direct contact heat exchanger, also known as mixed heat exchanger, is the cold and hot fluid direct contact and heat transfer equipment. Normally, the two fluids in direct contact are gases and liquids with lower vaporization pressure.

 

The working principle of energy storage heat exchanger is to make use of the thermal conductivity characteristics of solid substances. Specifically, the hot medium first heats the solid substances to a certain temperature, and the cold medium obtains heat from the solid substances. Heat transfer can be realized through this process.

 

Interwall heat exchanger also makes use of the heat conduction of mediators. Cold and hot media are separated by solid walls, and heat is exchanged through the walls. For heating enterprises, the wall heat exchanger is the most widely used. According to the different structure, it can also be divided into tube heat exchanger, plate heat exchanger and heat pipe.

 

Shell and tube heat exchanger

 

Shell - and - tube heat exchanger is also called row - tube heat exchanger. The working principle is that the wall of the tube bundle enclosed in the shell is used as the interwall heat exchanger. This kind of heat exchanger is simple in structure and reliable in operation. It can be made of various structural materials (mainly metal materials) and can be used under high temperature and high pressure.

 

Plate exchanger

 

Plate heat exchanger is composed of a group of metal plate, the plate has four corner holes for cold and hot two media through. The working principle is that during assembly, plate A and plate B are alternately arranged, forming A network of channels between the plates, and the gasket seals the cold and hot medium in the heat exchanger, while reasonably separating the cold and hot medium without mixing. In the channel, the cold and hot fluid flow in the interval, according to the needs of the upstream or downstream flow, in the flow process of the cold and hot fluid through the plate wall heat exchange, so as to achieve the desired effect.

 

In summary, it can be seen that the working principle of the heat exchanger is very similar, simply speaking, the equipment that can carry out heat exchange is the heat exchanger, but the equipment selected under different working conditions is different. No matter what kind of working condition you are, you can search kangjinghui thermal energy equipment co., ltd. on baidu, enter the website to contact us, our technical team can carry out detailed model selection calculation for us, so as to choose suitable equipment for us.

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