A3. There is a requirement for the power demand to be kept to a minimum when designing a fluidized bed. A 1-meter diameter fluidized bed is filled with 1800 kg of 2-mm diameter spherical particles to a depth of 1.6 meters. The density of spherical particles is 2100 kg/m 3 . The fluidizing gas, flowing at a rate of 830 m 3 /hr, has a density of 1.21 kg/m 3 and a viscosity of 1.4210 5 N.s 2 m 2 . The Kozeny constant can be taken as 5 . (a) [10 points] Determine the pressure drop over the fluidized bed. (b) [3 points] Determine the power requirement for flow of gas though the fluidized bed.