Answer Happy

You are asked to perform the analysis of a large flat wall of thickness L = 0.4 m, thermal conductivity K = 3
W/m-
°C and surface area A = 10 m? The left side of the wall, at x = 0, is subjected to a net heat flow of q. = 810 W/m?
of q. = 810 W/m? at the same time as the temperature at that surface is T1 = 90°C. Assuming a constant
constant thermal conductivity and that there is no heat generation at the wall, a) express the differential equation and the boundary conditions for the
and the boundary conditions for the one-dimensional and stationary conduction of heat through the wall, b) obtain a relationship between the
b) obtain a relation for the temperature variation therein by solving the differential equation, and c) evaluate the boundary conditions for one-dimensional and stationary heat conduction through the wall.
differential equation, and c) evaluate the temperature of the right surface, at x = L.
90 T 1 0 L 个个