A viscous solution contains particles with a density is to be clarified by centrifugation. The solution density is and its viscosity is 80 cp. The centrifuge has a bowl with and 3 1200 / p ρ = kg m3 ρ = 850 / kg m2r m = 0.02 1 r = 0.01 m and height b=0.25 m. Calculate the critical particle diameter of the largest particles in the exit stream if N=15000 rpm and flow rate q=0.002 m3 /hr?

• A. 2.9 μm
• B. 2.66 μm
• C. 3.15 μm
• D. 2.57 μm