5th Edition Chapter 3 New - Solution Manual Heat And Mass Transfer Cengel
where q is the heat flux, k is the thermal conductivity, A is the area, and dT/dx is the temperature gradient.
dT/dx = (80 - 40) / 0.4 = 100°C/m
To solve this problem, we can use the concept of thermal resistance: where q is the heat flux, k is
