Example: Conduction-Rectangular Coordinates
1000 Btu/hr is conducted via a section of insulating material shown in figure below which measures 1 ft2 in cross-sectional region. The thickness is 1 in. and thermal conductivity is 0.12 Btu/hr-ft-°F. Calculate the temperature difference across the material.
Figure: Conduction via a Slab
Solution:
By using the equation,
Solving for ΔT:
ΔT = 694°F