Thermal Conductivity

When a temperature gradient exists in a stationary medium, the heat transits from higher temperature to the other end via molecular activity.

The rate equation for heat conduction is also known as Fourier’s law.

Assuming a uniform medium, and temperature at both ends is constant, the one-dimensional heat transfer is listed as:

 qx ,  Heat transfer rate in the positive x direction
Κ ,    Material’s thermal conductivity (W/m•K)
A ,    The cross-sectional area (m²)
∆Τ ,  The temperature difference (K)
∆X ,  The heat transfer length (m)