(Note how the insulation dominates the total resistance. This is a common theme in Chapter 3 problems.)
A wall consists of 2 cm of brick ($k = 0.7 , \textW/m\cdot^\circ\textC$) and 5 cm of insulation ($k = 0.04 , \textW/m\cdot^\circ\textC$). The inside surface temperature is $20^\circ\textC$, and the outside is exposed to air at $5^\circ\textC$ with a convection coefficient of $h = 20 , \textW/m^2\cdot^\circ\textC$. Calculate the rate of heat loss per unit area. (Note how the insulation dominates the total resistance
Using the energy equation for one-dimensional, steady-state conduction with heat generation, we can derive the temperature distribution in the wall: Calculate the rate of heat loss per unit area
The 5th Edition solution manual provides step-by-step numerical answers. Here is how to use it as a , not a crutch. Here are a few sample problem solutions from Chapter 3:
Here are a few sample problem solutions from Chapter 3: