Heat exchanger expansion joints
Heat exchanger expansion joints
(OP)
Does anybody have a good reference for the design of thick walled expansion joints for a large diameter vertical heat exchanger? I am using APV to design the heat exchanger and I know I need an expansion joint, but part UHX in the code book is not very helpful as far as the design is concerned. Any help is appreciated.





RE: Heat exchanger expansion joints
Have you read Appendix 5 of ASME VIII-1?
How about EJMA? Also have a look into the literature in the US Bellows website... http://www.usbellows.com/
RE: Heat exchanger expansion joints
requirements for thick-walled expansion joints, but does not tell you HOW to do the calculations, nor does part UHX. I doubt EJMA will be of any help.
See also thread794-177673: Flanged & Flued Head in an ASME Vessel..
Regards
Mike
RE: Heat exchanger expansion joints
RE: Heat exchanger expansion joints
While I have not had time to study the calculations to my satisfaction, as the ouptut is voluminous, it appears that this software does pass the required variables between the fixed tubesheet and expansion joint calculations.
It further appears that it uses a combination of the ASME and TEMA calculations, that is, it calculates all the required UHX data, and then calculates any data required by the TEMA flexible shell element calculations.
Regards,
Mike
RE: Heat exchanger expansion joints
I just had to use APV for a 2 tubesheets heat exchanger, but I switched to TEMA because the tubesheet thickness, according to the code and therefore to APV, results to be TOO high (260 mm thick !!!!).
So with TEMA I had only 110 mm thickness, that sounds ok.
Has anybody had the same problems with tubesheet according to the code?
RE: Heat exchanger expansion joints
Also, I have had almost none that, strictly speaking, falls into part UHX applicability.
I also usually calculate per TEMA and use the thicker of the two. Why be half-safe:)
Part UHX is, however Mandatory.
Regards,
Mike
RE: Heat exchanger expansion joints
RE: Heat exchanger expansion joints