×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Vapor Distribution Belts

Vapor Distribution Belts

Vapor Distribution Belts

(OP)
Does compress handle vapor distribution belts for a heat exchanger or do I have to model it as a separate vessel? I did not see the option.

Please advise,

RE: Vapor Distribution Belts

Afox88,

COMPRESS has a feature to evaluate Integral Flat Head with large single circular central opening, Appendix 14.

Here is a story that could help you. We were asked to evaluate a heat exchanger with a vapor distribution belt. We first tried the Appendix 14 approach and the results were a required thickness for vapor distribution belt that was very thick (over 2" for MAWP=150 psi). We decided then to evaluate the vessel by use of FEA.

Hope it helps,

Eddy

RE: Vapor Distribution Belts

Eddy1988 - How did you justify that approach to your AI? Paragraph UHX-4(c) provides rules on how to handle a vapor distribution belt, which then refers to Appendix 5, or later in UHX depending on how the internal shell is handled. U-2(g) should only have been applied if there are no rules provided in ASME VIII-1.

Afox88 - As far as I know, Compress does not address vapor distribution belts. Would be a good addition though!

RE: Vapor Distribution Belts

(OP)
Thanks for the feedback. It would be a good feature.

RE: Vapor Distribution Belts

marty007- We did not justify the approach with a local AI. You are correct in saying that the Code does provide some guidance regarding vapor belts, I should have mentioned in the previous post. The particular vessel that I described on the post above was not applicable to Mandatory Appendix 5 in the Code; therefore we used the U-2(g) approach.

RE: Vapor Distribution Belts

I have reviewed many of these vessels and I can say that COMPRESS will not handle this correctly. In my case an FEA was performed for each of these vessels to verify the integrity of the area.

RE: Vapor Distribution Belts

(OP)
Now that I have a little more experience with compress, I normally run the vapor belt as a separate Division 1 vessel to determine the thickness of the belt and the nozzles. Then I simply perform the closure in an excel document I created based upon Appendix 9 calculations.

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close