solve Q#4

Question 3 A bed of alumino-silica gel is to be fluidized with air at 373 K. Calculate the velocity of air required to initiate the fluidization of the bed. Given: The average diameter of the particles = 1.25 mm Density of the gel = 970 kg/m3 Question 4 Determine the porosity and height of the fluidized bed for condition in Question 3; if the velocity of fluidizing air is 1.75 times the fluidization velocity. Take Lo= 400mm Question 3 A bed of alumino-silica gel is to be fluidized with air at 373 K. Calculate the velocity of air required to initiate the fluidization of the bed. Given: The average diameter of the particles = 1.25 mm Density of the gel = 970 kg/m3 Question 4 Determine the porosity and height of the fluidized bed for condition in Question 3; if the velocity of fluidizing air is 1.75 times the fluidization velocity. Take Lo= 400mm