×
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

Shell and tube reheaters rating

Shell and tube reheaters rating

Shell and tube reheaters rating

(OP)
Dear all,

I have attached an Excel spreadsheet that describes my problem and the solution i propose. Could you please insert your comments on it.

In brief, i have a shell and tube reheater that i want to rate after a capacity increase on process side (natural gas)but, as shown in the spreadsheet, some data of the initial design are missing...

Thank you in advance.

"We don't believe things because they are true, things are true because we believe them."

RE: Shell and tube reheaters rating

Since the increase in capacity will increase the overall heat transfer coefficient you could increase the accuracy of UA in the second step. The gas heat transfer coefficient will vary with approximately th 0.8 power. This could be used to calculate a new UA.
 

RE: Shell and tube reheaters rating

(OP)
Thanks but assuming UA constant is conservative, right?

Plus, do you think my approach sensible and correct as a preliminary rating?

"We don't believe things because they are true, things are true because we believe them."

RE: Shell and tube reheaters rating

What happened to the original operator's manual and specifications for the info. that is missing?

RE: Shell and tube reheaters rating

(OP)
Not yet received and i agree that it is necessary. However from an intellectual point of view i would like to know if my approach is sensible and correct...

Thanks for your time.

"We don't believe things because they are true, things are true because we believe them."

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