Tube Stress for heat exchanger.

[morest]

Hey guys,

I'd so appreciate if someone could help me. I need to determine the min thickness of a tube exposed to an extenal or internal pressure in a double tube heat exchanger. I encounter this problem a lot of time those past few weeks.

Does anyone has a little software able to calculate those kind of value? Especially for 316L, 304L and titane tubes.

Otherwise, do you know a complete software which could allow me to calculate that thickness?

Really, I'm desperate . I researching mainly for a CODAP 2005 or EN 13480 design code but even as ASME it'd be just great! ^^

Thank you a lot in advance if you can adduce me any help.

[morest]

Anyone has a clue to help me?

I found a way to calculate the pipe thickness exposed to an internal pressure. As the following:

thickness=P.Do/(2.f.z+P)

When P = design pressure
Do = outside diameter
f = global elasticity
z = joint coefficient

But i'm still looking for help when the pipe is exposed to an external pressure.

Please help me ^^

[mbc.engg]

You can use formulae specified in ASME Section VIII, div-1 (UG-27 or Appd-1 for internal pressure & UG28 for external pressure).

Various softwares available are: PV Elite, Compress, etc...

Thanks.

[morest]

Alright I'll try that thank you A LOT!

[morest]

Does any freeware exist for that kind of calculation? I just need a simple software to calculate thickness for external and internal pressure.

Even an excel sheet could be just awesome! ^^

thank you in advance.

[FATHI]

Morest

Are you talking about an exchanger not of the shell and tube but one with an INNER tube and and OUTER tube ??

So something similar to A jacketed pipe

In French = 2 tubes concentriques

Because if this is the case , then there are also other consideration

[morest]

Hey Fathi,

In fact yes I mainly was looking for those informations for a double tube heat exchanger but I thought if I could get the info for any case I could've made it for another case.

[FATHI]

There is a book on this site
title = Applying the ASME codes

they are in fact into two volumes , in volume 2 , there is a dedicated chapter about jacketed pipes , which you can probably apply to your case

[morest]

Great book.

Now I know exactly what I need. It's a excel sheet which allows me to calculate A and B without wasting a lot of time getting it on the table. If someone has that kind of stuff it'd be so awesome. thanks in advance guys.

[maeng]

Hi~Mr.morest,

If you want for manual calculation of the tube, i can send to you by e-mail.
My e-mail address is a chmaeng@twre.co.th ^^

[mahendrapal]

riend can you please send me the book to the next email mahendrapal.rathore@gmail.com or mahendrapal.rathore@ril.com.

i will remaining thank full to you for your support.


kind regards;
mahendra