The difference between plate heat exchanger and shell and tube heat exchanger

Plate heat exchanger and Shell And Tube Heat Exchanger are common heat exchangers, they are widely used in the field of thermal engineering. The role of the two heat exchangers is to transfer heat from one medium to another medium, so as to achieve the heating, cooling or temperature balance of the substance, although the role of the two heat exchangers is the same, but their design, structure and function have some differences, these differences determine their advantages and disadvantages in different applications.

Pool Heat Exchanger

Plate heat exchanger is a kind of heat exchanger composed of multiple flat slats. Plate heat exchanger such as brazed plate heat exchanger has the advantages of simple structure, high heat exchange efficiency, easy maintenance and cleaning. A typical plate heat exchanger can be divided into two parts, one is the corrugated plate interparts, the other is the plate heat exchanger end cover, the corrugated plate interparts are composed of several metal plates, the ground of each metal plate has some uncorrugated creases, these intelligent creases will increase the reciting of the hundred, thereby increasing the heat exchanger heat conduction area. At the same time, each layer of the wave plate spacer has a mutual nesting structure of wave peaks and waves, which can effectively increase the degree of mixing between the two media and improve the heat transfer efficiency. The two ends of the corrugated plate spacer are fixed and sealed with an end cover.

In contrast, the shell and tube heat exchanger structure is more complex. It is mainly composed of two parts: a shell and a bundle. The bundle part is composed of hundreds or thousands of metal tubes, generally divided into parallel, bunched and scattered three ways of arrangement, and the shell is the assembly of these tubes together, the space between the bundle and the shell formed a heat transfer channel, cold and hot individuals flow in the tube and the shell, through the conduction effect between the tube and the shell to achieve heat transfer, The number and arrangement of tube bundle parts, as well as the shape and size of shell will affect the performance of the heat exchanger. Generally speaking, these parameters must be designed according to the specific working conditions, and calculation simulation, so as to achieve a certain heat transfer efficiency.

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