Heat transfer of a cup of coffee

  • Thread starter kjamha
  • Start date
  • #1
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Main Question or Discussion Point

does a cup of coffee, say 85 degrees C in a 20 degree C room, lose more heat due to radiation or conduction. In general, do common objects lose more heat due to radiation vs. conduction?
 

Answers and Replies

  • #2
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10,445
Evaporation is the main effect for hot coffee.

In general, it depends on the materials used and the temperature difference, and you can even have different regions with different dominating effects in the same setup.
 
  • #3
russ_watters
Mentor
19,661
5,935
Of the four choices, conduction is likely the least. The mix of the other three would depend on the cup. Ie, if it is uninsulated, convection and radiation would be proportionally higher.
 

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