11. Windows were seldom used in order to reduce heat conduction . 12. Metals however, are not restricted to only phonon-based heat conduction . 13. Sensible heat conduction also heats the cooling water through the surface of the membrane. 14. Thermal contact conductance is the study of heat conduction between solid bodies in contact. 15. In the study of heat conduction , the Laplace equation is the steady-state heat equation. 16. Heat conduction happens by molecules transferring energy when they collide.17. Diffusion of heat can take place in solids, but that is called heat conduction . 18. Its low heat conduction allows for prolonged smoking without the pipe's heating up uncomfortably. 19. Different authors have used various methods to solve governing differential equation of heat conduction problem. 20. The traditional method for solving the heat conduction equation numerically is the Crank Nicolson method.