Abstract: With the advancement of technology, modern industry is rapidly developing, and the application of heat exchanger technology is increasingly valued
Strong heat exchanger technology can not only save energy, but also protect the environment. Due to the widespread application of heat exchangers, the related topics are
Research plays a very important role. This article conducts research on the development process of heat exchangers in China, while summarizing the shortcomings and proposing solutions for heat exchange
Looking ahead to the development prospects of the device.
Keywords: heat exchanger; Research status; expectation
Heat exchangers, as an energy technology, were widely used decades ago. With the process of China's reform and opening up,
With the rapid development of modern technology, heat exchanger technology is becoming more and more mature, and the heat transfer theory of heat exchangers is constantly being improved
The design is also increasingly being improved. Especially with the acceleration of industrialization, the problem of energy shortage has gradually emerged, making it difficult to replace
The position of heat exchangers in practice is constantly being elevated. Promote research on energy-saving of heat exchangers. Efficient and energy-saving heat exchangers are currently used for heat exchange
The focus of research in the field of machinery.
Current research status of domestic heat exchangers
There are three methods for heat transfer in heat exchangers, namely: inter wall heat exchangers, hybrid heat exchangers, and heat storage
The intermediate wall heat exchanger is divided into plate type heat exchanger and tube type heat exchanger according to the structure of heat transfer. Plate type heat exchanger
The heat exchangers are divided into plate type, plate fin type, spiral plate type, plate shell type, and umbrella plate type. Tubular heat exchangers are further divided into shell and tube types
Two types.
1.1 Tubular heat exchangers
At present, the main application of heat exchangers in China is to use shell and tube heat exchangers, and the operating principle of shell and tube heat exchangers is applied in
Heat transfer is carried out on the wall surface of the tube wall in a closed shell. Although not as good as the new type of heat exchanger in many aspects, due to its firmness
The advantages of its structure, wide selection of materials, convenient operation, strong adaptability, and strong resistance to high pressure make it widely used in modern industry
Widely applicable. The spiral groove tube heat exchanger among them belongs to a relatively early experimental research in China, and regardless of the heat transfer aspect
Significant success has been achieved in both surface and flow scale inhibition, as well as effective condensation and phase change convection. Spiral twisted tube
The heat exchanger has been developed and researched by South China University of Technology in China to solve the problem of supporting baffle plates due to the contact between pipes
Enhanced the seismic resistance of the device. This ensures that the fluid undergoes effective swirling throughout the entire process inside the heat exchanger. At the same time, South China University of Technology
The scaling tube heat exchanger has also been modified by minimizing the expansion section in the scaling tube and adopting a straight line. Concave and convex connections
Method. Enhanced the function of natural convection boiling heat transfer. Make the scaling tube widely used in boilers.
1.2 Plate type heat exchanger
Due to the higher heat transfer, lighter weight, and better structure of plate heat exchangers compared to tube heat exchangers
The increasing popularity of type heat exchangers. Research on detachable plate heat exchangers in China has made certain progress in the 1980s
The detachable plate heat exchanger has the advantages of flexible increase or decrease in area and convenient cleaning, making it play an important role in heating engineering.
However, due to the characteristics of its own structure, there is a problem of compatibility between the sealing gasket and the fluid of the heat exchanger. Our country uses snails in factories
The rotary plate heat exchanger is used for heating the electrolyte and cooling the alkaline solution. It has the advantages of small size, easy production and use, and low cost
Point. There are already relatively complete technical standards for spiral plate heat exchangers in China, and this type of heat exchanger is relatively mature in China. Plate wing
Type heat exchangers have been increasingly used in industrial production in recent years due to their compact structure, small volume, and ability to transfer heat energy
Strong strength and other advantages. It is considered one of the most promising heat exchangers for development.