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4. The pulverized clay particles are heated by flowing through a 4 m long cylindrical tube whose surface is maintained at Tsur = 1000°C. The particles may be approximated as spheres of 1-mm diameter and it may be assumed that they are heated by radiation heat transfer from the tube surface. a) If the particles entering the tube at 25 °C is heated to a temperature of 600°C, at what speed the clay particles suspended in the air flow should be moved? b) Is the use of the lumped capacitance method appropriate? The properties of clay:p=1460 kg/m', c,-880 J/kg K, k=1.3 W/m K, ɛ=0.91

4. The pulverized clay particles are heated by flowing through a 4 m long cylindrical tube whose surface is maintained at Tsur = 1000°C. The particles may be approximated as spheres of 1-mm diameter and it may be assumed that they are heated by radiation heat transfer from the tube surface. a) If the particles entering the tube at 25 °C is heated to a temperature of 600°C, at what speed the clay particles suspended in the air flow should be moved? b) Is the use of the lumped capacitance method appropriate? The properties of clay:p=1460 kg/m', c,-880 J/kg K, k=1.3 W/m K, ɛ=0.91

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
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4. The pulverized clay particles are heated by flowing through a 4 m long cylindrical tube whose surface is maintained at Tsur = 1000°C. The particles may be approximated as spheres of 1-mm diameter and it may be assumed that they are heated by radiation heat transfer from the tube surface. a) If the particles entering the tube at 25 °C is heated to a temperature of 600°C, at what speed the clay particles suspended in the air flow should be moved? b) Is the use of the lumped capacitance method appropriate? The properties of clay:p=1460 kg/m, c,=880 J/kg K, k=1.3 W/m K, e=0.91
Transcribed Image Text:4. The pulverized clay particles are heated by flowing through a 4 m long cylindrical tube whose surface is maintained at Tsur = 1000°C. The particles may be approximated as spheres of 1-mm diameter and it may be assumed that they are heated by radiation heat transfer from the tube surface. a) If the particles entering the tube at 25 °C is heated to a temperature of 600°C, at what speed the clay particles suspended in the air flow should be moved? b) Is the use of the lumped capacitance method appropriate? The properties of clay:p=1460 kg/m, c,=880 J/kg K, k=1.3 W/m K, e=0.91
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