Heat and mass transfer in heterogeneous media where a phase transition takes place

Heat and mass transport is modelled in a heterogeneous material where conve ction can take place in the continuous phase and diffusion can take place i n both continuous and dispersed phase. The component being transported is i n the continuous phase a vapour and in the dispersed phase a liquid. At the phase interface, the component can evaporate or condensate. Derivations ar e given for the effective material properties (diffusion coefficient and th ermal conductivity) and for the transport of heat and mass. (C) 2000 Elsevi er Science Ltd. All rights reserved.