How does heat conductivity work? Al -> Cu

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Discussion Overview

The discussion revolves around the heat conductivity between two metal blocks, specifically Aluminium and Copper, when one is heated. Participants explore the implications of heat transfer, thermodynamic principles, and the behavior of these materials under specific conditions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant posits that if Aluminium is heated to 100 degrees C, Copper will draw heat from it, potentially becoming hotter than Aluminium.
  • Another participant references Clausius' statement of the second law of thermodynamics, suggesting that heat will equalize between the two materials.
  • A participant expresses the belief that heat transfer from Aluminium to Copper will continue, with Copper shedding heat faster than Aluminium.
  • Several participants seek clarification on the exact scenario being discussed, indicating confusion over the initial description.
  • There is a repeated assumption that Copper conducts or radiates heat into the environment more efficiently than Aluminium, but this is questioned by others.

Areas of Agreement / Disagreement

Participants express differing views on whether Copper will become hotter than Aluminium or if the temperatures will equalize. The discussion remains unresolved regarding the specifics of heat transfer rates between the two metals.

Contextual Notes

Participants have not fully clarified the assumptions regarding the environmental conditions or the specific heat transfer mechanisms at play, leading to some ambiguity in the discussion.

hlock
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TL;DR
Will copper draw heat out of aluminium to be hotter then the Al?
One has two same volume blocks of metal, one Aluminium and one copper pushed together. If the Aluminium is instantly heated to 100 degrees C, since it has significantly higher heat conductivity will the copper draw the heat out and at some point be hotter then the aluminium? Or will it just draw the heat out until it hits equal temperature?
 
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Ok thankyou, "Heat can never pass from a colder to a warmer body without some other change" so essentially it will equalise. Though I assume heat transfer Al->Cu will keep happening as the Cu will shed it faster.
 
What is the exact situation you are looking at? Your present description is rather confusing?
 
hlock said:
the Cu will shed it faster.
i am not sure what you mean by the statement
 
256bits said:
i am not sure what you mean by the statement

I assume he means the Cu radiates/conducts it into the environment faster than the Al will.
 
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DaveC426913 said:
I assume he means the Cu radiates/conducts it into the environment faster than the Al will.
But does it?
 

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