Question

A plane wall of thickness δ has its surfaces maintained at temperatures T₁ and T₂. The wall is made of a material whose thermal conductivity varies with temperature according to the relation k = k₀ T². Find the expression to work out the steady state heat conduction through the wall?

a.

Q = 2A k₀ (T₁³ – T₂³)/3 δ

b.

Q = A k₀ (T₁³ – T₂³)/3 δ

c.

Q = A k₀ (T₁² – T₂²)/3 δ

d.

Q = A k₀ (T₁ – T₂)/3 δ

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Answer: (b).Q = A k₀ (T₁³ – T₂³)/3 δ

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Q. A plane wall of thickness δ has its surfaces maintained at temperatures T₁ and T₂. The wall is made of a material whose thermal conductivity varies with temperature according to...

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