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A four pitched blades turbine is used to continuously stir a food mixture A which having a viscosity and density of 1.2 x 102 Pa-s and 1450 kg/m, respectively. The turbine with a diameter of 0.8 m is mounted centrally in a baffled tank of a diameter 2.5 m. a) Given the values of constant K and KT for various type of impellers are as shown in Table 3, determine the suitable speed (revolution per second) of the turbine impeller for a fully turbulent condition which exhibits a Reynolds number of 110,000. i. Subsequently, suggest the power required for the impeller. ii. The same agitated vessel is used to mix a food mixture B having a viscosity and density of 110 Pa-s and 970 kg/m³, respectively. By applying the same turbine speed as in a), determine the power required for the system. Table 3 Values of constants K, and K, for baffled tanks Type of Impeller KL K, Propeller, three blade Pitch 1.0 41 0.32 Pitch 1.5 48 0.87 Turbine Six-blade disk 65 5.75 Six pitched blades 1.63 Four pitched blades 44.5 1.27 Flat paddle, two blades 36.5 1.70 Helical ribbon 52 Anchor 300 0.35

A four pitched blades turbine is used to continuously stir a food mixture A which having a viscosity and density of 1.2 x 102 Pa-s and 1450 kg/m, respectively. The turbine with a diameter of 0.8 m is mounted centrally in a baffled tank of a diameter 2.5 m. a) Given the values of constant K and KT for various type of impellers are as shown in Table 3, determine the suitable speed (revolution per second) of the turbine impeller for a fully turbulent condition which exhibits a Reynolds number of 110,000. i. Subsequently, suggest the power required for the impeller. ii. The same agitated vessel is used to mix a food mixture B having a viscosity and density of 110 Pa-s and 970 kg/m³, respectively. By applying the same turbine speed as in a), determine the power required for the system. Table 3 Values of constants K, and K, for baffled tanks Type of Impeller KL K, Propeller, three blade Pitch 1.0 41 0.32 Pitch 1.5 48 0.87 Turbine Six-blade disk 65 5.75 Six pitched blades 1.63 Four pitched blades 44.5 1.27 Flat paddle, two blades 36.5 1.70 Helical ribbon 52 Anchor 300 0.35

Introduction to Chemical Engineering Thermodynamics
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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A four pitched blades turbine is used to continuously stir a food mixture A which having a viscosity and density of 1.2 x 102 Pa-s and 1450 kg/m, respectively. The turbine with a diameter of 0.8 m is mounted centrally in a baffled tank of a diameter 2.5 m. a) Given the values of constant K and KT for various type of impellers are as shown in Table 3, determine the suitable speed (revolution per second) of the turbine impeller for a fully turbulent condition which exhibits a Reynolds number of 110,000. i. Subsequently, suggest the power required for the impeller. ii. The same agitated vessel is used to mix a food mixture B having a viscosity and density of 110 Pa-s and 970 kg/m, respectively. By applying the same turbine speed as in a), determine the power required for the system. Table 3 Values of constants K, and K- for baffled tanks Type of Impeller K K, Propeller, three blade Pitch 1.0 41 0.32 Pitch 1.5 48 0.87 Turbine Six-blade disk 65 5.75 Six pitched blades 1.63 Four pitched blades 44.5 1.27 Flat paddle, two blades 36.5 1.70 Helical ribbon 52 Anchor 300 0.35
Transcribed Image Text:A four pitched blades turbine is used to continuously stir a food mixture A which having a viscosity and density of 1.2 x 102 Pa-s and 1450 kg/m, respectively. The turbine with a diameter of 0.8 m is mounted centrally in a baffled tank of a diameter 2.5 m. a) Given the values of constant K and KT for various type of impellers are as shown in Table 3, determine the suitable speed (revolution per second) of the turbine impeller for a fully turbulent condition which exhibits a Reynolds number of 110,000. i. Subsequently, suggest the power required for the impeller. ii. The same agitated vessel is used to mix a food mixture B having a viscosity and density of 110 Pa-s and 970 kg/m, respectively. By applying the same turbine speed as in a), determine the power required for the system. Table 3 Values of constants K, and K- for baffled tanks Type of Impeller K K, Propeller, three blade Pitch 1.0 41 0.32 Pitch 1.5 48 0.87 Turbine Six-blade disk 65 5.75 Six pitched blades 1.63 Four pitched blades 44.5 1.27 Flat paddle, two blades 36.5 1.70 Helical ribbon 52 Anchor 300 0.35
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