Answered: zero). Wall B has no heat generation…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A composite plane wall of A and B is shown in the figure below. Wall A has uniform volumetric heating at a rate of 1898 kW/m³ (note that the unit is kW) and to prevent any heat loss through the surface at x=0 a uniform heat flux is provided as shown (i.e., all the generated heat in wall A flows in +x direction and the temperature gradient at x=0 is zero).

Wall B has no heat generation and its outer surface (x = L_A+L_B) is exposed to a fluid at 25°C with a convection heat transfer coefficient of h. All other relevant and ‘irrelevant’ values are given in the figure.

If the thickness of wall A is L_A = 62 mm and the temperature at the interface T₂ = 180 °C, calculate the temperature T₁ in °C.

A composite plane wall of A and B is shown in the figure below. Wall A has uniform volumetric heating at a rate of 1898 kW/m3 (note
that the unit is kW) and to prevent any heat loss through the surface at x=0 a uniform heat flux is provided as shown (i.e., all the
generated heat in wall A flows in +x direction and the temperature gradient at x=0 is zero).
Wall B has no heat generation and its outer surface (x = LA+LB) is exposed to a fluid at 25°C with a convection heat transfer coefficient of
h. All other relevant and 'irrelevant' values are given
the figure.
If the thickness of wall A is LA = 62 mm and the temperature at the interface T2 = 180 °C, calculate the temperature T, in °C.
Round your answer to the nearest integer value and write only the numerical value in the provided box, not the units.
T2
T3
T = 25 °C
wall A
wall B
k = 50 W/mK
k = 150 W/mK
LA
La = 20 mm

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