HYDRODYNAMICS OF COMPARTMENTED FLUIDIZED BEDS FOR CONCENTRATED SOLAR POWER AND THERMAL ENERGY STORAGE APPLICATIONS - (PPT)

摘要

Results confirm the expected inherent tendency of the bed to equalize uneven fluidization. Crossflow of fluidizing gas from the active to the passive sections of the bed, driven by lateral pressure gradients, promotes fluidization of the passive section and/or defluidization of the active section of the bed. Crossflow becomes increasingly important as the bed depth increases and this makes compartmented fluidization of deep beds more problematic. Large scale coherent solids mobility is promoted also in the passive section of the bed by particle gulf streaming induced by bubbly flow in the active section.