STEADY-STATE HEAT TRANSFER IN TRANSVERSELY HEATED POROUS MEDIA WITH APPLICATION TO FOCUSED SOLAR ENERGY COLLECTORS

摘要

A fluid flowing in a porous medium which is being heated transversely to the fluid flow is con¬sidered. This configuration is applicable to a focused solar energy collector for use in an electric power generating system. A fluidized bed can be regarded as a porous medium with special properties. The solutions presented are valid for describing the effectiveness of such a fluidized bed for collecting concentrated solar energy to heat the working fluid of a heat engine. Results indicate the advantage of high thermal conductivity in the transverse direction and high operating temperature of the porous medium.