Particle size (um) Wt % 0-10 10-20 20-30 8. 10 12 30-40 15 40-50 19 50-60 60-70 14 13 9. 70-80 The size distribution of dust in air exiting from an industrial operation is given above. You are busy...

Extracted text: Particle size (um) Wt % 0-10 10-20 20-30 8. 10 12 30-40 15 40-50 19 50-60 60-70 14 13 9. 70-80 The size distribution of dust in air exiting from an industrial operation is given above. You are busy designing a settling chamber to clean the air. The horizontal velocity is to be 0.31ms-1. The temperature is 770C, the specific gravity of the particle is 2.0, and the chamber length and depth equal 7.5m and 1.5m respectively. What is the terminal velocity of the particle that is just removed 100%? Enter the answer value in ms 1 to an accuracy of at least four decimal places. Assume that B = 0.9.


Extracted text: Particle size (um) Wt % 0-10 10-20 20-30 8. 10 12 30-40 15 40-50 19 50-60 14 60-70 13 70-80 9. The size distribution of dust in air exiting from an industrial operation is given above. You are busy designing a standard conventional cyclone. The airstream is 21.3ms-1 and the diameter of the cyclone is 2m. The viscosity of the gas is 4.0 x 10-kgm-'sl, What is the diameter of the particle that is just removed 100% in pm to an accuracy of at least 2 decimal places? Assume that B = 0.9.