Shell Tube Heat Exchanger Introduction:

Shell tube heat exchanger is a commonly used heat exchange equipment, widely used in industrial production and energy fields. It uses the shell-and-tube structure to realize heat transfer and exchange through the heat transfer medium between the shell and the tube bundle. The working principle, structural characteristics and application fields of the shell tube heat exchanger will be introduced in detail below.

The working principle of the shell and tube heat exchanger is to use the heat conduction and convection between the fluid inside the tube and the fluid outside the tube to complete the heat exchange. Among them, the fluid inside the tube is called cold fluid, and it flows in the tube bundle; the fluid outside the tube is called hot fluid, and it flows in the shell. In the heat transfer process, the cold fluid enters the tube bundle from the inlet pipe, exchanges heat with the hot fluid through the tube wall, and then flows out through the outlet pipe. The hot fluid flows through the outer wall of the shell, exchanges heat with the tube wall, and finally flows out from the outlet of the shell. In this way, heat is transferred and exchanged between the cold fluid and the hot fluid.

The structure of shell tube heat exchanger is mainly composed of shell, tube bundle, inlet and outlet pipes and supporting devices. The shell is the outer shell of the heat exchanger, which carries the tube bundle and acts as a seal. The tube bundle is formed by a number of tubes arranged in parallel, and the cold fluid flows through the tube bundle. The inlet and outlet pipes are used to input and output fluid medium to the heat exchanger. The supporting device is used to support and fix the shell and tube bundle.

Features:

First, the heat transfer efficiency is high and the heat transfer area is large. Since the tubes inside the tube bundle are arranged in parallel, the fluid can fully contact the heat transfer surface during the heat exchange process, thereby improving the heat transfer efficiency. Secondly, the shell and tube heat exchanger has the advantages of simple structure, mature manufacturing process, and convenient maintenance. At the same time, since there is a certain expansion space between the tube bundle and the shell, it can effectively deal with the expansion and contraction problems caused by temperature changes, and has a certain fault tolerance. In addition, shell and tube heat exchangers can also adapt to various working conditions and are widely used in chemical, petroleum, energy, food and other fields.

Shell and tube heat exchangers are widely used in industrial production. For example, in the chemical industry, shell and tube heat exchangers are used in the cooling, heating and regeneration of various fluids, such as ammonia refrigeration, steam condensation and oil heating. In the field of energy, shell tube heat exchangers are also widely used in gas boilers, boiler descaling, power generation equipment and other systems to improve energy utilization efficiency. In addition, shell tube heat exchangers can also be used in natural gas liquefaction, food processing, aerospace and other fields.

In short, as a common heat exchange equipment, the shell tube heat exchanger has the characteristics of high heat transfer efficiency, simple structure, and convenient maintenance, and plays an important role in industrial production and energy fields. Through reasonable selection and design, shell and tube heat exchangers can meet the heat exchange requirements under different working conditions, improve energy utilization efficiency, and promote industrial development.