Consider a large plane wall of thickness L = 0.4 m, thermal conductivity k = 1.8 W/mK,
Consider a large plane wall of thickness L = 0.4 m, thermal conductivity k = 1.8 W/m·K, and surface area A = 30 m2. The left side of the wall is maintained at a constant temperature of T1 = 90°C while the right side loses heat by convection to the surrounding air at T∞ = 25°C with a heat transfer coefficient of h = 24 W/m2·K. 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,
(b) Obtain a relation for the variation of temperature in the wall by solving the differential equation,
(c) Evaluate the rate of heat transfer through the wall.
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