(30 minutes) (20 Marks) Problem 4: Part A/ A viscous solution contains particles with a density pp- 1350 kg/m³ is to be

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30 Minutes 20 Marks Problem 4 Part A A Viscous Solution Contains Particles With A Density Pp 1350 Kg M Is To Be 1 (41.58 KiB) Viewed 41 times

(30 minutes) (20 Marks) Problem 4: Part A/ A viscous solution contains particles with a density pp- 1350 kg/m³ is to be clarified by centrifugation. The solution density is p = 950 kg/m³ and its viscosity is 89cP. The centrifuge is operated at N=25000 rpm and a flowrate q=0.005 m³/hr; the centrifuge has a bowl operating between r2 = 0.025m and r₁= 0.01 m with height b=0. 5m. O Particle Trajectory Lipid Surface (1) What is the angular velocity (w) in this case Feed (2) Compute the operating volume (between ₁ and ₂) (3) Use the volume flowrate to estimate the critical particle diameter Dc of the largest particles at the exit stream Part B/ ratio of centrifugation to gravity separation rates In order to estimate the ratio of centrifugation-to-gravity separation, using parameters defined in part A/ and assuming Stoke's law calculate: (1) the free settling velocity (ug), and (2) the centrifugation settling velocity (ur.) (3) the ratio of centrifugation -to-gravity settling