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cm is allowed to cool to cool at the rate of eat transfer coefficient

cm is allowed to cool to cool at the rate of eat transfer coefficient

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 metallic ball (p=2700 kg/m' and Cp = 0.9 kJ/kg °C) of diameter 7.5 cm is allowed to cool in air at 25°C. When the temperature of the ball is 125 °C, it is found to cool at the rate of 4°C per minute. If thermal gradients inside the bail are neglected, the heat transfer coefficient (in W/m² °C) is
Transcribed Image Text:A metallic ball (p=2700 kg/m' and Cp = 0.9 kJ/kg °C) of diameter 7.5 cm is allowed to cool in air at 25°C. When the temperature of the ball is 125 °C, it is found to cool at the rate of 4°C per minute. If thermal gradients inside the bail are neglected, the heat transfer coefficient (in W/m² °C) is
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