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Heat exchanger classification and working principle

Release time:

2022-08-01

The classification and working principles of heat exchangers have always been the key points that everyone wants to know. There are many types of heat exchangers, such as condensers, coolers, heaters, evaporators, reboilers, etc. Today, I will share with you the relevant content of the classification of heat exchangers and their working principles. So, let's find out.

The structure of a heat exchanger is simply heat exchange! A heat exchange device that can transfer part of the heat of the hot fluid to the cold fluid does not sound very Is it simple? But the application field accounts for a large proportion in other application fields such as chemical industry, food, petroleum, heat exchange station, boiler heating, etc. With the rapid development of heat exchangers, there are many types of heat exchangers.

Heat exchanger classification: heat storage type, partition type, hybrid type. Next, Xiaobian Kang Jinghui introduces the classification and working principles of heat exchangers in detail.

Classification and working principles of heat exchangers

1. Regenerative heat exchanger

The regenerative heat exchanger has valve switching function and rotary function. The principle of regenerative heat exchange is a regenerative body composed of solids. When the heat medium first heats the solid material to a certain temperature, it can heat the cold solid and transfer heat from the high temperature fluid to the low temperature fluid to achieve the purpose of heating.

2. Baffle type

There are many types of wall heat exchangers. It is a spray heat exchanger, a casing heat exchanger, a shell and tube heat exchanger, a plate heat exchanger, and an immersed coil heat exchanger.

I think the tube and plate styles are generally familiar.

1. Plate heat exchanger

The plate heat exchanger is a classic baffle plate heat exchanger, which is mainly composed of plates and sealing rubber. It is also the big brother of all heat exchangers. Dominant in the industrial field. With advantages that cannot be underestimated, many industries are gradually replacing shell and tube heat exchangers.

2. Shell and tube heat exchanger,

Mainly named after the principle of heat exchangers, shell-and-tube heat exchangers generally have two fluids for heat exchange. The flow outside the tube is called the shell pass, and the flow inside the tube is called the tube pass. The main structure is composed of tube plate, pot body, tube bundle, head and other parts, and the pot body is mainly circular. A spiral tube or parallel tube bundle is installed inside, and the two sections of the tube bundle are fixed on the tube sheet.

3. Heat exchanger mixed heat exchanger combined power type

The classification and working principles of hybrid heat exchangers are mainly due to the direct contact heat transfer of hot and cold fluids, which avoids the thermal resistance of dirt on both sides of the baffle type. As long as the contact between the fluids is good, it can achieve a good heat transfer rate, and the application range is also very wide. This hybrid heat exchanger can be used when fluids are allowed to mix with each other, and is generally classified into the following types according to the application.

1. Hybrid capacitor

The commonly used method is steam condensation, which generally involves direct contact between steam and water.

2. Cooling tower

This heat exchanger is relatively energy-saving, and can cool the water heated up in production by means of mechanical ventilation and natural wind, thereby improving the economic benefits of the system.

3. Jet heat exchanger

The working principle of the jet heat exchanger can be ejected from the high pressure nozzle, the speed is fast, the mixing type of the low pressure fluid flow path is in direct contact with the jet, Enter the diffuser together, reach the same temperature as the diffuser outlet, and provide it to the user.

The above is the classification of heat exchangers and their working principles. For more information, feel free to contact us! Our company has many years of experience and is looking forward to your joining.