Contact US

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

Equilibrium temperature of a metallic bar

Equilibrium temperature of a metallic bar

Equilibrium temperature of a metallic bar


If a metallic bar is continuously heated by a heater, how the final temperature of the metallic bar can be calculated? I'm looking for some formula's to do manual calculations without resorting to sophisticated softwares. Metallic bar is not enclosed and on one side is in touch with a heater.

kind regards.

RE: Equilibrium temperature of a metallic bar

Is the heater limited by power or temperature?
If it is power then you just balance the input power (to the bar, this may be limited by the thermal conductivity of the material) with the convective and radiant heat loss from the bar.
How long it will take is another problem altogether.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: Equilibrium temperature of a metallic bar

144x: Look at two things - how the heat gets added to the bar, and how the heat gets dissipated from the bar. The addition portion is a result of the heating element - convection (indirect contact), conduction (direct contact), or both. Both have limits on how the heat gets to the bar (thermal efficiency). Likewise, look at how the heat gets out - again, convection and/or conduction. There is an efficiency to this part of the process as well. How the two sides of the equation work together determines how much heat the bar can contain - and thus it's final "steady state" temperature as a result of a given thermal input. (Note: this also applies to COOLING a bar!)

Converting energy to motion for more than half a century

RE: Equilibrium temperature of a metallic bar

Is there an example or guide or standard that has the formula that you can guide me to?

RE: Equilibrium temperature of a metallic bar

Any basic college text on heat transfer will have a similar example.
Find an ME and borrow one.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: Equilibrium temperature of a metallic bar

Omega Engineering, Chromalox, and Watlow have good handbooks/catalogs for calculating heat losses empirically,

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


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