Steady-state Heat Conduction in Planar Walls: Summary

The answers to the ConcepTests are given below and will open in a separate window. 
Key points from this module:
  1. The temperature gradient at an insulated wall is zero (i.e., dT/dx = 0).
  2. The temperature gradient within a uniform wall without heat generation at steady-state is linear (i.e., dT/dx = constant)
  3. For walls connected in series without heat generation and at steady state, the rate of heat transfer is the same through each wall.
  4. For two walls in series, for steady state conduction through the walls.
  5. Contact resistance where two wall join results in a temperature drop between the walls.
From studying this module, you should now be able to:
  • LEARNED #1
  • LEARNED #2
  • LEARNED #3
Prepared by John L. Falconer, Department of Chemical and Biological Engineering, University of Colorado Boulder