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Q & A: thermal conductivity of water

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Most recent answer: 06/08/2016
Q:
Cooling in water is faster than cooling in air. This is due to larger specific heat of water or larger heat transfer coefficient. Which one is the predominant factor?
- Shivanathan (age 21)
Kanniakumari
A:

You can write the thermal conductivity as the product of two factors: the heat capacity per volume and the thermal diffusion coefficient. Water has a much higher thermal conductivity than air precisely because it has much more heat capacity per volume. 

Mike W.


(published on 06/08/2016)

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