×
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 side nozzle

heat exchanger side nozzle

heat exchanger side nozzle

(OP)
We have a shell and tube exchanger which has gas on the shell side and liquid on the tube side.  On the gas side, the exchanger has one inlet nozzle on the top side  and two outlet nozzles.  One gas outlet nozzle (say Nozzle A) is at the bottom while the other gas outlet nozzle (say Nozzle B) is at the side of the exchanger (at the mid point of the exchanger).    During normal operation the flow is out Nozzle A only (design case).   During another mode of operation (rating case) the flow is out through Nozzle B only (no flow through Nozzle A).   

I suspect that when the outlet flow is only through Nozzle B the U*A will be less than the design case U*A as there would be a "dead spot" in the exchanger where there is no forward flow, which results in lower velocities and hence lower U.   I understand that HTRI can not be used to calculated the reduction in U*A when the flow is out Nozzle B. HTRI can not distinguish whether the flow is out Nozzle B or Nozzle A with regards to U*A.    Is this correct?  If so,  is there any way to estimate the reduction in U*A when the flow is out Nozzle B.

Thanks.    

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