Answered: A local pharmaceutical manufacturing…

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

Section: Chapter Questions

Problem 1.1P

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QUESTION 3

A local pharmaceutical manufacturing facility is experimenting on a new version of body lotion. To facilitate this, the facility mechanical engineers installed an impeller with 6 flat blades in a tank with a diameter of 3 metres with no baffles. The diameter of the disk turbine made from the impellers is 0.5 metres and is positioned 1.0 metres above the bottom of the tank. The turbine blades are 100 mm wide. The tank is filled to a depth of 3 metres with a body lotion preparation base at 30°C. Desired properties were attained at impeller speeds of 120 rpm. The quality assurance laboratory has provided the following properties for this base at 30°C:

Density = 1600kg/m³

Viscosity = 3.2 Pa.s

Calculate the power required to turn the impeller.

As the plant’s Process Engineer, you are given a task of scaling up this process to acquire the same properties in a similar larger vessel with a diameter of 5 metres if available. Advise the plant management on the following:

The required turbine diameter for the larger vessel

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