surface area A = 20 m². The left side of the wall at yis subjected to a net heat flux of -
-120 W/m² while the temperature at that surface is measured to be 7 = 50°C. Assuming constant
thermal conductivity and no heat generation in the wall:
a) Express the differential equation and the boundary conditions for steady one-dimensional heat
conduction through the wall. (5 marks)
b)
Obtain a relation for the variation of temperature in the wall by solving the differential equation.
(10 marks)
c) Evaluate the temperature of the right surface of the wall at y = -(5 marks)
4 =-120 W/m²
T = 50°C
A = 20m²
217
0.4m
k = 10 W/
L=0.8m
Fig: 1