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Q(5): A piece of aluminum (p=2705 kg/m, k=216 W/m.°C, Cp=896 J/kg.°C) having a mass of 4.78 kg and initially at a temperature of 290°C is suddenly immersed in a fluid at 15 C. The convection heat transfer coefficient is 54 W/m".°C. Taking the aluminum as a sphere having the same mass at that given, estimate the time required to cool the aluminum to 90°C. Find also the total neat transferred during this period.

Q(5): A piece of aluminum (p=2705 kg/m, k=216 W/m.°C, Cp=896 J/kg.°C) having a mass of 4.78 kg and initially at a temperature of 290°C is suddenly immersed in a fluid at 15 C. The convection heat transfer coefficient is 54 W/m".°C. Taking the aluminum as a sphere having the same mass at that given, estimate the time required to cool the aluminum to 90°C. Find also the total neat transferred during this period.

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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Q(5): A piece of aluminum (p=2705 kg/m, k=216 W/m.°C, Cp-896 J/kg. C) having a mass of 4.78 kg and initially at a temperature of 290°C is suddenly immersed in a fluid at 15 C. The convection heat transfer coefficient is 54 W/m".°C. Taking the aluminum as a sphere having the same mass at that given, estimate the time required to cool the aluminum to 90°C. Find also the total heat transferred during this period. (10
Transcribed Image Text:Q(5): A piece of aluminum (p=2705 kg/m, k=216 W/m.°C, Cp-896 J/kg. C) having a mass of 4.78 kg and initially at a temperature of 290°C is suddenly immersed in a fluid at 15 C. The convection heat transfer coefficient is 54 W/m".°C. Taking the aluminum as a sphere having the same mass at that given, estimate the time required to cool the aluminum to 90°C. Find also the total heat transferred during this period. (10
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