Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 1 (Q.No. 9)
9.
With increase in temperature, the thermal conductivity of non-metallic amorphous solids
Discussion:
16 comments Page 1 of 2.
Shikhar Nigam said:
6 years ago
In non-metals, the primary reason for hear flow is lattice vibration (not free electrons). Hence on increasing temp, vibrations also increase thus increasing K.
(2)
Gowtham Nanda said:
4 years ago
According to Fourier's law of heat conduction, the thermal conductivity of a solid is inversely proportional to temperature.
Q=kAT/x.
Q=kAT/x.
(2)
Siddharth P. said:
7 years ago
Non-metals are generally referred as insulators or poor conductors of heat; so their resistance decreases with increase in temperature and hence the conductivity increases as they are inversely proportional.
(1)
Meena said:
5 years ago
basically non metal heat flow is driven by vibration not free electron as told by @nigam
(1)
Karthikayini said:
1 decade ago
The most common example of pure conduction is heat flow in opaque solids such as the brick wall of a furnace.
Babu said:
1 decade ago
With increase in temperature free electron movement will be promoted in amorphous solids there by k increases.
Sarfu said:
10 years ago
T increase K will increase.
Akhilesh said:
9 years ago
Not understanding. Explain it.
Omprakash nipane said:
9 years ago
But in amorphous solid, there are weak bonding, so that no chance of free electron movement, then how it is increasing?
Riddhi said:
8 years ago
Please anyone explain it?
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