HEX U-Bends under external pressure
HEX U-Bends under external pressure
(OP)
thread794-256857: Heat Exchanger U-bend Under External Pressure
Hi all,
Is it really necessary to calculate the external pressure of U-Bends? Can we assume the U-bends are self-stiffened as it is joint to the straight part of tube, so the weakest part is the straight long tube?
If we use TEMA RCB-2.31 I have seen many calculator programs (AutoPIPE Vessel) showing the formula to = t1*(1 + do/4R), but I cannot understand how the t1 is given in relation to external pressure.
Or is TEMA formula using t1 only considering the U-bends under internal pressure?
Main question is how to calculate the required thickness of U-bend under external pressure using EN13445 + TEMA?
I appreciate your experienced support.
Many thanks.
LG
Hi all,
Is it really necessary to calculate the external pressure of U-Bends? Can we assume the U-bends are self-stiffened as it is joint to the straight part of tube, so the weakest part is the straight long tube?
If we use TEMA RCB-2.31 I have seen many calculator programs (AutoPIPE Vessel) showing the formula to = t1*(1 + do/4R), but I cannot understand how the t1 is given in relation to external pressure.
Or is TEMA formula using t1 only considering the U-bends under internal pressure?
Main question is how to calculate the required thickness of U-bend under external pressure using EN13445 + TEMA?
I appreciate your experienced support.
Many thanks.
LG
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Mechanical Engineer
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