A lab scale mixing tank fitted with baffles and a 6 blade-flat blade turbine agitator is used to mix a fuel. The agitator operates at a rotor speed of 3 rev.s-1 in the baffled tank which conforms to the standard configuration. The diameter of the tank is 4 m and operates at an efficiency of 75 %. The fuel used in the experiments has a density of 1100 kg./m3 and a viscosity of 1.4Pa.s. 1.1. Determine the actual power output of the agitator, and determine the dimensions of the standard tank, i.e. DA, HA, a, r, HL and b. ​​​​​​​ 1.2. The mixer needs to be scaled up 5 times for industrial purposes What is the actual power output of the scaled up agitator if the tip speed is the same as the pilot scale experiments?​​​​​​​​​​​

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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A lab scale mixing tank fitted with baffles and a 6 blade-flat blade turbine agitator is used to mix a fuel. The agitator operates at a rotor speed of 3 rev.s-1 in the baffled tank which conforms to the standard configuration. The diameter of the tank is 4 m and operates at an efficiency of 75 %. The fuel used in the experiments has a density of 1100 kg./m3 and a viscosity of 1.4Pa.s.

1.1. Determine the actual power output of the agitator, and determine the dimensions of the standard tank, i.e. DA, HA, a, r, HL and b. ​​​​​​​

1.2. The mixer needs to be scaled up 5 times for industrial purposes What

is the actual power output of the scaled up agitator if the tip speed is the same as the pilot scale

experiments?​​​​​​​​​​​

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