Thermal Conduction and Coefficient of Thermal Conductivity

Physics

definition

Heat conductivity

Thermal conductivity or heat conductivity is the property of a material to conduct heat.Examples of metals are iron, copper etc.
Examples of non-metals are aluminium oxide, diamond.

definition

Heat conductivity

The property of metal to conduct heat is called as heat conductivity of metal.
Metals like aluminum , copper shows this property.

definition

Proportionality of rate of heat transfer and temperature gradient at steady state

In steady state, the rate of flow of heat from one point to another is proportional to the temperature difference () and the area of cross section and is inversely proportional to length L:

The constant of proportionality is the thermal conductivity of the material.

definition

Coefficient of thermal conductivity

Coefficient of thermal conductivity:
Cefficient of thermal conductivity of the material of solid is equal to the rate of flow heat per unit area per unit temperature gradient across the solid.