How heat exchangers are classified?

- Apr 10, 2018-

How heat exchangers are classified?


A heat exchanger is a device that transfers the heat of a hot fluid to a cold fluid, also known as a heat exchanger.

Devices that transfer heat energy between fluids at different temperatures are called heat exchangers, and are referred to as heat exchangers.

In heat exchange, at least two fluids with different temperatures are required. One fluid has a higher temperature and emits heat. The other fluid has a low temperature and absorbs heat.

In the engineering practice, there will also be heat exchangers with more than two fluids participating in the heat exchange, but the basic principles are the same.


Heat exchangers are common equipment for chemical, petroleum, power, food, and many other industrial sectors and play an important role in production.

In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, reboilers, etc., and are used more widely.


There are many kinds of heat exchangers, but according to the principles and methods of heat exchange between cold and hot fluids, they can be basically divided into three categories: surfaced, hybrid, and regenerative. 

In the three types of heat exchangers, the surface heat exchanger is used most.


Definition: A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger.


Classification: Heat exchangers are indispensable devices for achieving heat exchange and delivery during chemical production.

In the heat exchange, there are often some corrosive and highly oxidizing materials. Therefore, the material for manufacturing the heat exchanger is required to have strong corrosion resistance.

Heat exchangers are more widely classified:

Reactor. Pressure vessel condenser reaction pot spiral plate heat exchanger bellows heat exchanger tube heat exchanger.

Plate heat exchanger. Spiral plate heat exchanger shell and tube heat exchanger volumetric heat exchanger floating head heat exchanger tubular heat exchanger heat pipe heat exchanger steam water heat exchanger heat exchange unit graphite heat exchanger air heat exchanger

Titanium heat exchangers require materials that produce heat exchangers to have strong corrosion resistance. It can be made of non-metallic materials such as graphite, ceramics, glass, and stainless steel, titanium, tantalum, zirconium, and other metal materials.

However, the use of graphite, ceramics, glass and other materials made of fragile, bulky, poor thermal conductivity and other shortcomings, with titanium, tantalum, zirconium and other rare metals made of heat exchangers are too expensive, stainless steel is resistant to many corrosive media , And produce intergranular corrosion.

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