Thermodynamics Forum

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7/22/2022

Relation between thermal conductivities of composite material - GATE ME '06

In a composite slab, the temperature at the interface (Tinter) between two materials is equal to the average of the temperatures at the two ends. Assuming steady one-dimensional heat conduction, which of the following statements is true about the respective thermal conductivities?

A. 2K1=K2 B. K1=K2 C. 2K1=3K2 D. K1=2K2

Ans:

n a composite slab, the temperature at the interface (Tinter) between two materials is equal to the average of the temperatures at the two ends. Assuming steady one-dimensional heat conduction, which of the following statements is true about the respective thermal conductivities?

heat flow is same in composite materials irrespective of location

The answer is D.

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