Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion
Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 3)
3.
Which of the following statement is wrong?
Discussion:
31 comments Page 2 of 4.
Manish said:
1 decade ago
Thermal conductivity is the property of any material which show the speed of vibration and electron transfer from one point to another.
Dwaipayan said:
6 years ago
LMTD=MTD is valid only when both the fluids in the heat exchanger are subjected to phase change only.
So option D is not correct.
So option D is not correct.
(1)
Rohan said:
10 years ago
If temperature of solid is increased it will expand thus its molecules will get separated thus reducing the thermal conductivity?
Pradeep said:
9 years ago
Not only convection. Heat flow in still water also occurs due to conduction. Hence option A is partially correct.
Swapnil said:
1 decade ago
Thermal conductivity is inversely proportional to temperature(According Fourier's law of heat conduction).
Ilyas said:
7 years ago
K=Ko(1+bT) here b is negative for solid so thermal conductivity decreases while increase in temperature.
Satish said:
1 decade ago
K(Thermal conductivity)inversely proportional to temperature(T)(Fourier's law of heat conduction).
Jyosna said:
1 decade ago
Thermal conductivity is inversely proportional to the temperature, according to fourier's law.
Ravi kumar said:
1 decade ago
For pure metals temperature increases k value decreases for alloys it will increases.
Ajit kumar said:
1 decade ago
Thermal conductivity is a property of material and it is independent of temperature.
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