×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

ASME VIII, extrados thickness

ASME VIII, extrados thickness

ASME VIII, extrados thickness

(OP)
Hi there, hope you are fine !
Please, I am here to ask you an hint.
I am calculating an heat exchanger according to ASME VIII div.1.
I have following doubt:
In an hairpin the minimum thickness is in extrados after binding.

My question is : are there any formulas to calculate the thickness reduction with respect of straight tube ?

This is how I would operate
According to
ASME B31.5 504.2.1(b, c), with following requirement
Dmax - Dmin <= 0.08Dnom

I can utilize
ASME B31.5 504.2.1(a)

And then, considering
ASME VIII sec 1 UG-27(c), I consider the max between thicknesses got from eq 1 (for circumferential stress) and eq 2 (longitudinal stress)

PLease can anybody confirm me this method is correct ?
Are there different ways to calculate this ?

Many thanks

RE: ASME VIII, extrados thickness

I tend to use the formula in TEMA in the U-bend section. Forgive me I do not have my TEMA book in front of me so I can't tell you the formula without being sure I remembered it correctly.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources