×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

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

Full vacume vessel FV
4

thread483-488889

Full vacume vessel FV

Full vacume vessel FV

(OP)

Hi geants,
please could you explain the fv (full vacume) pressure for vessel?
and wht the inetrnal pressure less than external pressure.?

Regards.

RE: Full vacume vessel FV

Full Vacuum: Internal Absolute Pressure = 0 psi, external absolute pressure = 15psi.

RE: Full vacume vessel FV

Process Engineers would say Internal design pressure 0 psia, external pressure assuming above ground at sea level 15 psia.

Why?

Sometimes you can have e.g a vessel full of steam which then cools and condenses to water at a very small fraction of the volume.
Sometimes you can connect your vessel to a pump or compressor which pulls all the contents out of the vessel.

Many times it won't be absolute vacuum, but FV is better than trying to guess what level of sub atmospheric pressure you can rely on.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Full vacume vessel FV

(OP)
Many thanks guys for your answers

Could you provied more examples for good understanding

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