Heat transfer problems
Thread Content
In steady-state heat conduction through multi-layer flat walls, if a certain layer has the smallest thermal resistance, the temperature difference across that layer is the greatest. Why is this? Why does it feel like it’s the smallest? Please, everyone, help me out.
It’s sufficient for the heat transfer flux to remain the same
Keep in mind that, when the heat flux is constant, the temperature difference is proportional to the thermal resistance. This post was last edited by abingchem on 2009-4-18 11:38.]
Where did you see it? Following standard academic conventions, one should not ask and answer questions in this way: “1+1=3 is wrong; I think it should be 2.”” ； Instead, it should be “XX mentioned in XXX article (or book, speech, etc.) that 1+1=3, but I think it should be 2.”
If the heat flux is constant, it’s easy to understand.
Firstly, in multi-layer steady heat transfer, the flux is the same across all layers; therefore, the layer with the lowest resistance requires the least driving force. With the smallest thermal resistance, the required driving force and temperature difference must also be the smallest. The original poster’s own understanding is likely correct; could there be an error in that conclusion, or are there any other explanations? . .
Thank you all. It’s a question; the answer might be wrong