0.77 W/m Q 4) Consider a 20-cm-thick large concrete plane wall (k subjected to convection on both sides with Tol 27°C and hl = 5 W/m °C on the inside, and T2 8°C and h2 12 W/m? °C on the outside. Assuming constant thermal conductivity with no heat generation and negligible radiation, (a) express the differential equations and the boundary conditions for steady one- dimensional heat conduction through the wall, (b) obtain a relation for the variation of temperature in the wall by solving the differential equation, and (c) evaluate the temperațures at the inner and outer surfaces of the wall.

0.77 W/m Q 4) Consider a 20-cm-thick large concrete plane wall (k subjected to convection on both sides with Tol 27°C and hl = 5 W/m °C on the inside, and T2 8°C and h2 12 W/m? °C on the outside. Assuming constant thermal conductivity with no heat generation and negligible radiation, (a) express the differential equations and the boundary conditions for steady one- dimensional heat conduction through the wall, (b) obtain a relation for the variation of temperature in the wall by solving the differential equation, and (c) evaluate the temperațures at the inner and outer surfaces of the wall.

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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Question

Q 4) Consider a 20-cm-thick large concrete plane wall (k :
0.77 W/m
°C)
subjected to convection on both sides with Tol = 27°C and hl = 5 W/m °C on
12 W/m. °C on the outside. Assuming
the inside, and T2
8°C and h2
%3D
constant thermal conductivity with no heat generation and negligible radiation, (a)
express the differential equations and the boundary conditions for steady one-
dimensional heat conduction through the wall, (b) obtain a relation for the
variation of temperature in the wall by solving the differential equation, and (c)
evaluate the temperațures at the inner and outer surfaces of the wall.
31
MSc. Rasha Nasser

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