Expansion joint calculation
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In shell-and-tube heat exchangers, the shell side often features a structure in which a tube section is connected between two semi-wave expansion joints; this serves both to compensate for the temperature difference between the shell and tube sides and to act as a flow guide tube. As shown in the figure, when calculating the expansion joint for such a structure, should the length entered be “L” as shown in the diagram?"
This post was last edited by wanlirn on 2018-6-10 09:38. In our case, it’s about removing the length L of the intermediate cylinder. Some experts believe that it cannot be calculated using expansion joints; this is especially true for large heat network heaters with saddles installed inside the intermediate cylinder (and there is some logic to that). It should be calculated according to Section 4 in 20582
Generally, there is no saddle seat in this section