5. Design Problem 1) Solid pellets of 5 mm diameter are to be fluidized with 3000 mh of air at 1 atm and TC in a vertical cylindrical vessel. The density of the rounded solid particles is similar to the ones used in experiment. The given quantity of air is just sufficient to fluidize the solids. Determine the vessel diameter and terminal velocity. Show pressure drop versus superficial 23 X=3 T=30 velocity characteristic curve showing both fixed and fluidized bed region. (Column height can be assumed 'X' times the column diameter). Suggest method how porosity of the particles can be obtained experimentally. (values of 'T' and 'X' will be given to you by instructor)