×
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

Heat Exchanger Outlets

Heat Exchanger Outlets

Heat Exchanger Outlets

(OP)
Hello,
I have a question if you people can help me. I have two exchangers/ coolers of exactly same dimensions. Its TEMA split flow type. these are copy of each other. each has a duty of 13 mmBtu. but there is a differential in outlets. the difference is that one has 12"outlets that combine in a single 14" spool and then again reduce in a 12"line. while other has both outlets of 12" that remain 12"through out.

both have same quantity of process stream incoming. what do you think what will be effect of having this configuration.


Regards,

RE: Heat Exchanger Outlets

Yes, a configuration like that will not affect the incoming process stream. And there would be practically no affect. It opens, reducing velocity, and then reduces 2 inches in diameter increasing the velocity of the fluid again, but only back to the velocity it was flowing before..

------                                   --^--
------     has the same exit velocity as --_--

Sorry for the crude drawing, hope it gets the point across.

The only difference is that it could possibly turn laminar flow into turbulent flow, if the flow wasnt already turbulent to begin with.

"Scientists dream about doing great things. Engineers do them." -James Michener

RE: Heat Exchanger Outlets

You will have some expansion loss as it transitions from 12" to 14" and some entrance losses as it transitions back.  Depending on what your flows are, that difference might be in the second or third decimal place.

I'd want to make sure that the one that had the 14" piece was the one located closer to the rising sun so that the Coriolis force could help equalize the difference.  (see tongue in cheek) :=)

rmw

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