How is the length of the shell in a U-tube heat exchanger determined?
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I would like to ask the teachers: how is the length of the shell in a U-tube heat exchanger determined?
loft by tube bundle! Discussion on the process!
The distance from the outer wall of the U-tube bundle to the inner wall of the head should be greater than the maximum expansion amount of the entire bundle; I usually set it so that the end of the U-tubes is roughly at the same level as the weld seam on the head. Of course, different companies have different requirements in this regard.
There are no rules regarding this. If the heat exchange area includes the area of the U-shaped bends in the tubes, then the structural design must take into account the flow of the fluid through these U-shaped bends; the inlet or outlet on the shell side should be located outside these bend sections, and in such cases the shell needs to be made longer.
This post was last edited by wanlirn on 2021-12-28 at 11:46. Roughly speaking, it is calculated based on the radius of the cylinder body plus the length of the straight section of the U-tube
Generally, the distance from the tangent of the elbow to the tangent of the cylinder is 0.5DN+100, for reference only
The control housing is slightly larger than the outer wall of the outermost tube of the U-tube