×
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

finned tube in a tank of water

thread391-468732

finned tube in a tank of water

finned tube in a tank of water

(OP)
Hi

Hope you are fine and safe.

Please, I am dealing with following problem, and I’d kindly need some pieces of advice.

I have a finned tube that is inserted in a tank full of water.
The purpose of this finned tube is to cool the water of the tank
Into this finned tube passes refrigerant at a lower temperature than water.
My problem is that I can’t find the right correlation in order to set the governing equation, with the aim to know how much the water is cooled.
My second doubt is also if considering this heat transfer natural or forced, since water is standing still in the tank – the same tank is emptied only when temperature is obtained -

I would be extremely grateful if you could recommend me some reference literature, or, in the best case, an example of calculation

Thanks in advance

Stay Safe !

RE: finned tube in a tank of water

Try looking up finned heat exchanger calculation / design

It can be quite complex and in a still bath of water your only circulation mechanism is convection of the water in the bath, which will be quite slow.

So matching the coolant temperature to the pipe size to the size of the fins will be an interesting balance.

You need to avoid freezing the water in the fins clearly.

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

RE: finned tube in a tank of water

For this batch cooling operation by natural convection, the appropriate equation to use would most likely be eqn 11-35 on page 11-18 in the chapter on heat transfer equipment design in Perry Chem Engg Handbook - 7th edn. You'd probably be not far off the mark if you used the average value of U (between initial and final values). See elsewhere in this same book to get a value for ho for this fin tube assembly.

RE: finned tube in a tank of water

If this is an open tank, can you put in a mixer? That would cut back on your cooling time.

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