English

Noun

thermal conductance ‎(plural thermal conductances)

1. (physics) A measure of the ability of a particular body or assembly to conduct heat.

Usage notes

The heat (thermal energy) flow P_th through a given body depends on the thermal conductance C_th of that body, and the temperature difference ΔT over it, and follows the formula:

Thus, the higher the conductance, the higher the heat flow. The unit of thermal conductance in SI system of units is W·K⁻¹. For the special case of an ideal plate with area A, thickness d and thermal conductivity λ, the thermal conductance of the plate is:

The multiplicative inverse of thermal conductance is thermal resistance, denoted as R_th.

Related terms

• thermal conductivity

Translations