SW6 calculation for fixed-tube-sheet heat exchangers
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I would like to ask everyone: when using SW6 to calculate fixed-tube-sheet heat exchangers, I didn’t find a field where I could enter the length by which the heat exchange tubes extend beyond the tube sheet. After performing the calculations and checking the result sheet, I found that the value for \"effective length of the tubes (distance between the inner surfaces of the two tube sheets), L\" was incorrect. How do you handle this issue?
For spot welding, there is a welding length; I usually enter 4. Our company generally defaults to extending the tube sheet by 4 mm for welding. If you choose expansion joining, fill in the expansion length. Just fill in the answers truthfully. Entering the wrong value also affects the strength calculation.