Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 6 (Q.No. 40)
40.
The thermal diffusivity for solids is generally less than those for liquids and gases.
Discussion:
9 comments Page 1 of 1.
Nagajan Odedra said:
3 years ago
Conflict is that the Thermal diffusivity of mercury is lesser than that of copper but greater than oak wood.
For Hg=4.53*10^-6.
For Cu=113*10^-6.
For Oakwood=0.013*10^-6.
So it's difficult to conclude the thermal diffusivity relationship b/w solid and liquid but for understanding purposes liquid has a higher t.d. than solid
For Hg=4.53*10^-6.
For Cu=113*10^-6.
For Oakwood=0.013*10^-6.
So it's difficult to conclude the thermal diffusivity relationship b/w solid and liquid but for understanding purposes liquid has a higher t.d. than solid
(1)
Kartik said:
6 years ago
I think A is the answer, as we think about mean free path, I don't think Solid has a number of mean free path than those of liquid and gases so Option A should be the correct one.
(1)
Debashis said:
7 years ago
Answer is right.
Thermal diffusivity: Solid>Gas>Liquid.
Thermal diffusivity: Solid>Gas>Liquid.
(1)
Rameshwar said:
8 years ago
Rubber is solid which has the lowest thermal diffusivity. So answer is right.
Uday said:
8 years ago
I think it's A.
Shanmukha said:
8 years ago
Agree @Hitesh Daka.
Karthi said:
9 years ago
A is the correct answer.
Yami said:
9 years ago
Answer should be A.
Hitesh Daka said:
9 years ago
Thermal diffusivity:
Metal > Gas > Liquied.
Metal > Gas > Liquied.
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