Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 7 (Q.No. 16)
16.
Thermal conductivity of solid metals __________ with rise in temperature.
Discussion:
3 comments Page 1 of 1.
Shrivardhan said:
6 years ago
For metals, the thermal conductivity is mainly a function of the motion of free electrons. As the temperature increases, the molecular vibrations increase (in turn decreasing the mean free path of molecules). So, they obstruct the flow of free electrons, thus reducing the conductivity.
Ashish Patel said:
6 years ago
Q= KA dt/dx.
So, K Inversely Proportion to Temperature.
So, K Inversely Proportion to Temperature.
Ram said:
9 years ago
Due to increased lattice vibration.
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