HEAT TRANSFER BETWEEN PACKED,AGITATED AND FLUIDIZED BEDS AND SUBMERGED SURFACES

Heat transfer between packed, agitated and fluidized beds and submerged surfaces is treated by a common theoretical concept. The thermal properties appearing in this concept may be predicted a priori. The remaining problem is how to describe the particle motion. It is shown that the penetration model, which is well known from gas liquid systems, also applies to gas-solid systems. The results of the theoretical approach are compared with numerous experimental data obtained from literature.