Beer with a specific gravity of 1.05 and viscosity of 1.5 mPa.s and having 2% solids is clarified at a rate of 60 gallons per hour in a bowl centrifuge. The density of solids is 1180 kg/m3. The operating volume of the bowl is 25 gallons and operating at a speed of 10,000 rpm. The bowl has a diameter of 4 and 3/16” and outlet diameter is 1.5”. Calculate the effect on feed rate with an increase in the bowl speed to 12,000 rpm and the minimum particle size that can be removed at this higher speed. All conditions except the bowl speed remains the same

. (Grinding Operations and Grinding Machines) (USCS units) In a centerless grinding operation, the grinding wheel diameter = 8 in, and the regulating wheel diameter = 5.0 in. The grinding wheel rotates at 1500 rev/min, and the regulating wheel rotates at 180 rev/min. The inclination angle of the regulating wheel = 2.3°. Determine the production rate of cylindrical work parts whose diameter = 0.5 in and length = 5.0 in. Solutions used; fr = TD₂N, sin I

As shown in Figure D, three water reservoirs are connected by three pipes. The diameters in each pipe is 1 ft and the Fanning friction factor in each pipe is 0.02. The effective lengths of each pipe are given in the Figure along with other relevant data. Determine the flow rate into or out of each reservoir as well as the Reynolds number in each pipe. (Hint: Start the computations by assuming that the water flows into reservoir B).

It is desired to have a laminar flow for the piping system shown below. The fluid flowing in the piping system is air at 70 °C. (Note: You must use the physical data from Perry's Handbook) a) Calculate the maximum allowable bulk velocity in m/s for pipes 1, 2, and 3 that will satisfy the statement above. The velocities obtained must satisfy the continuity equation. b) Calculate the Reynolds number of each pipe using the velocity values obtained earlier. c) Calculate the mass flow rate of the system (in kg/min). 3. 2 12-in. pipe 2-in. pipe 3-in. pipe 1/2-in. pipe