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Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 3)
Heat Transfer, Refrigeration and Air Conditioning
3.
Which of the following statement is wrong?
The heat transfer in liquid and gases takes place according to convection.
The amount of heat flow through a body is dependent upon the material of the body.
The thermal conductivity of solid metals increases with rise in temperature,
Logarithmic mean temperature difference is not equal to the arithmetic mean temperature difference.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
31 comments Page 4 of 4.
Jaya krishna said:   1 decade ago
For solids Thermal Conductivity is dependent on lattice vibrations and movement of free electrons, as temp increases movement of free electrons is hampered by lattice vibrations.
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