×
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

Effectiveness-NTU graphs/equations
2

Effectiveness-NTU graphs/equations

Effectiveness-NTU graphs/equations

(OP)
Does anyone know of any sources for effectiveness-NTU graphs (or equations) for somewhat out of the ordinary heat exchanger configurations (i.e. not only cross, counter and parallel flow).  I am looking for something that would handle a serpentine crossflow configuration where the serpentines run parrallel to the flow direction and could be either overall counter flow or overall parallel flow.  Hope this makes sense!  Thanks...

RE: Effectiveness-NTU graphs/equations

Heat Transfer by Holman or Incropera&Devitt.

Regards,

RE: Effectiveness-NTU graphs/equations

You can try Compact Heat Exchangers by Kays and London.  

K. Stifle, P.E.

RE: Effectiveness-NTU graphs/equations

For any heat transfer problem: VDI waermeatlas.

Cees-Jan

RE: Effectiveness-NTU graphs/equations

I'll recall you what my professor of thermodynamics said in the old times: the difference between an arithmetic average temperature difference and a logarithmic average temperature difference is normally only a few percent!
That is to say that very simple equations are almost always sufficient to figure out and even to design a heat exchanger.

prex

http://www.xcalcs.com
Online tools for structural design

RE: Effectiveness-NTU graphs/equations

Try this book:

The fundamental of Heat and Mass transfer/ or Introduction to Heat Transfer; by Holman or Incropera&Devitt.

Both are basically the same book with one thermo chapter difference.

Sometimes MIT would release their courses on the web for students; try there for any information.

Good luck!

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