ABSTRACT
This chapter gives a brief overview of heat transfer in porous media. We derive the macroscopic energy balance equation in porous media based on the averaging theory.We also discuss two ways of modeling heat flow in a two-phase material consisting of a solid matrix and a fluid. In one case, we assume that there is no local thermal equilibrium between the two phases, and hence the balance of energy is represented by two coupled energy equations for each individual constituent. In the other, we assume that there is a local thermal equilibrium, and we show that the balance energy can be represented by a single energy equation, using effective thermal parameters.
