Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 3 (Q.No. 25)
25.
The thermal diffusivity for gases is generally __________ those for liquids.
Discussion:
4 comments Page 1 of 1.
Shibunath said:
8 years ago
Option C is correct though the thermal conductivity of the liquid is more the gases thermal diffusivity also depends on density and heat capacity. Which is very small in terms of gases. That's why air has low thermal conductivity but relatively high thermal diffusivity that is 0.19 and water has 0.014.
(1)
Deepak said:
8 years ago
I think B is the right answer.
Vijay said:
9 years ago
Solid> gas>liquid.
Nihar said:
9 years ago
Thermal diffusivity of solid > liquid > gas.
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