A general non-linear and non-local heat transport equation is proposed in view to study heat conduction at low temperature (< 25 K) in non-metallic crystals. It is shown that the proposed relation generalizes the classical laws of Guyer and Krumhansl, Cattaneo and Fourier. The problem is treated within the framework of Extended Irreversible Thermodynamics. Special emphasis is placed on the consistency of the results with the second law of thermodynamics.
|Journal||Periodica Polytechnica Chemical Engineering|
|Publication status||Published - 1 Jan 1997|
- Extended irreversible thermodynamics
- Heat conduction
- Low temperature