B How does heat conductivity work? Al -> Cu

AI Thread Summary
When two metal blocks, aluminum and copper, are pressed together and the aluminum is heated to 100 degrees C, the heat will transfer between them until they reach thermal equilibrium. According to the second law of thermodynamics, heat cannot flow from a colder body (copper) to a warmer body (aluminum) without additional changes. However, copper has higher thermal conductivity, which means it can conduct heat away from the aluminum more efficiently. This leads to the assumption that while the copper will not become hotter than the aluminum, it will shed heat to the environment faster than the aluminum. The discussion highlights the complexities of heat transfer and thermal conductivity between different metals.
hlock
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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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