Thermal effusivity

In Thermodynamics, the thermal effusivity of a material is defined as the square root of the product of the material's thermal conductivity and its volumetric heat capacity. [http://www.evitherm.org/default.asp?ID=277]

:$e\; =\; \{(k\; ho\; c\_p)\}^\{1/2\}$

Here, k is the thermal conductivity, $ho$ is the density and $c\_p$ is the specific heat capacity. The product of $ho$ and $c\_p$ is known as the volumetric heat capacity.

A material's thermal effusivity is a measure of its ability to exchange thermal energy with its surroundings.

ee also

* thermal inertia
* thermal diffusivity
* heat capacity
* specific heat capacity
* heat equation
* thermal conductivity

References

External links

* [http://www.evitherm.org/default.asp?ID=277 A reference on various thermal stuff]