Calculate the temperature on the other side of the plate.

  • Context: Undergrad 
  • Thread starter Thread starter ladil
  • Start date Start date
  • Tags Tags
    Plate Temperature
Click For Summary

Discussion Overview

The discussion revolves around calculating the temperature on the other side of a stainless steel plate (2mm thick) when one side is at 400°C. Participants explore the necessary conditions and parameters for estimating the temperature after one minute, considering factors like insulation and ambient temperature.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Homework-related

Main Points Raised

  • One participant requests a simple derivation to calculate the temperature on the other side of the plate after one minute.
  • Another participant suggests that additional information is needed, such as the initial temperature of the cold side, insulation status, ambient room temperature, and heat rate entering the plate.
  • A later reply clarifies that the plate serves as a cover for a box with a liquid inside, which is at a temperature higher than 400°C, but the exact temperature is unknown.
  • One participant proposes using convection heat transfer coefficients and Fourier's Law of Conduction to estimate the temperature if the ambient air temperature is known.
  • The original poster expresses a desire for guidance on derivations and assumptions needed for the calculations, indicating a lack of formal study in thermodynamics.

Areas of Agreement / Disagreement

Participants generally agree that additional information is necessary to proceed with the calculation, and multiple competing views on how to approach the problem remain unresolved.

Contextual Notes

Limitations include the unknown initial temperature of the cold side, the insulation status of the plate, and the lack of measured parameters that could affect heat transfer calculations.

Who May Find This Useful

Individuals interested in thermodynamics, heat transfer calculations, or those seeking to understand the principles of temperature estimation in materials may find this discussion relevant.

ladil
Messages
12
Reaction score
0
Hello,

I need some help in a matter.
I don´t have any great knowledge in thermodynamics.

If I have a plate of stainless steel (2mm thick).
On one of the sides of the plate the temperature is 400C.

I need to have a "simple" derivated calculation regarding how much the temperature is on the other side after 1 minute. Maybe I can plot the increase in temperature as a function of time.

Thank you.
 
Science news on Phys.org
IMHO, I would think we have to know at least one of the following to give a solution:

1) the initial temperature of the other "cold" side of the plate
2) if the "cold" side is insulated
3) if it isn't insulated, how hot the room is (giving us an idea of the heat leaving the plate on the "cold" side)
4) the heat rate entering the plate from the "hot" side.
 
OK.

This plate is a cover for a box so the temperature on the inside of the box is higher than 400C. I have a media (liquid) inside the box that I need to calculate the temperature on the inside of the plate that is on the box.

1. unknown. This is what I want an estimation of.
2. The plate is a cover on a box.
3. I havn´t measured anything like that.
4. I don´t know.

Do you need anything else?
 
We need to know another temperature somewhere. If the box is in a room with air at, say, 25 degC, then we can try to calculate a convection heat transfer coefficient for free convection and use that in tandem with Fourier's Law of Conduction to get a rough estimate of the temperature of the plate. That's the method I would use.
 
The box is in a room with air at approx. 25C.
Do you know where I can find some derivations or how to begin?

I havn´t studied thermodynamics, but maybe I can derive something if I just know the start of it and if there any special assumptions to be made.
Thanks.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 109 ·
4
Replies
109
Views
9K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K