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Shell and tube heat exchanger
Shell and tube heat exchanger

The shell-and-tube heat exchanger is a kind of heat exchange equipment , which is composed of a shell, a heat transfer tube bundle, a tube sheet, a baffle and a baffle. The housing is mainly cylindrical, and a tube bundle is arranged inside, and both ends of the tube bundle are fixed on the tube sheet. The two fluids are hot and cold, one flowing in the tube and the other being a tube fluid. The other is to flow outside the tube, called the shell side fluid。 In order to increase the heat transfer coefficient of the external fluid, several baffles are usually installed in the housing. The baffle can increase the fluid velocity on the shell side and force the fluid to pass through the tube multiple times on a regular path to increase the turbulent level of the fluid. The heat exchange tubes can be arranged on the tube sheets by equilateral triangles or squares. The equilateral triangle arrangement is more compact, the fluid outside the tube is high, and the heat transfer coefficient is large; the square arrangement is convenient for cleaning outside the tube, and is suitable for fluids that are easy to scale。

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