For a slab with thickness 2 cm, the temperature is maintained at To and T at x = 0 and x = L When T, -40 °C and T₂ = 60 °C, a heat flux sensor measures the magnitude of the heat flux as 40 W/m². Assume that the thermal conductivity k is a linear function of temperature. a) If, when T₁ =40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 80 W/m², what is the temperature dependence of k? b) If, when To=40 °C and T1 = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 100 W/m², what is the temperature dependence of k? c) If, when I, -40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 60 W/m², what is the temperature dependence of k?

For a slab with thickness 2 cm, the temperature is maintained at To and T at x = 0 and x = L When T, -40 °C and T₂ = 60 °C, a heat flux sensor measures the magnitude of the heat flux as 40 W/m². Assume that the thermal conductivity k is a linear function of temperature. a) If, when T₁ =40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 80 W/m², what is the temperature dependence of k? b) If, when To=40 °C and T1 = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 100 W/m², what is the temperature dependence of k? c) If, when I, -40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 60 W/m², what is the temperature dependence of k?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.23P: Using the information in Problem 1.22, estimate the ambient air temperature that could cause...

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5. For a slab with thickness 2 cm, the temperature is maintained at To and T₁ at x = 0 and x = L. When To 40 °C and T₂ 60 °C, a heat flux sensor measures the magnitude of the heat flux as 40 W/m². Assume that the thermal conductivity k is a linear function of temperature. a) If, when To -40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 80 W/m², what is the temperature dependence of k? b) If, when To -40 °C and T₂ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 100 W/m², what is the temperature dependence of k? c) If, when To=40 °C and T₂ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 60 W/m², what is the temperature dependence of k? =
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