  The non-Fourier heat conduction phenomenon on room temperature is analyzed
from various aspects. The first one shows its experimental side, in what form
it occurs and how we treated it. It is demonstrated that the Guyer-Krumhansl
equation can be the next appropriate extension of Fourier's law for room
temperature phenomena in modeling of heterogeneous materials. The second
approach provides an interpretation of generalized heat conduction equations
using a simple thermomechanical background. Here, Fourier heat conduction is
coupled to elasticity via thermal expansion, resulting in a particular
generalized heat equation for the temperature field. Both of the aforementioned
approaches show the size dependency of non-Fourier heat conduction. Finally, a
third approach is presented, called pseudo-temperature modeling. It is shown
that non-Fourier temperature history can be produced by mixing different
solutions of Fourier's law. That kind of explanation indicates the
interpretation of underlying heat conduction mechanics behind non-Fourier
phenomena.
