A 25-cm-diameter stainless steel ball (p = 8055 kg/m³, Cp =480 J/kg °C) is removed from the oven at a uniform temperature of 300°C (Fig.). The ball is then subjected to the flow of air at 1 atm pressure and 25°C with a velocity of 3 m/s. The surface temperature of the ball eventually drops to 200°C. Determine the average convection heat transfer coefficient during this cooling process and estimate how long the process will take. T₁=25°C V = 3 m/s Air Steel ball 300°C

A 25-cm-diameter stainless steel ball (p = 8055 kg/m³, Cp =480 J/kg °C) is removed from the oven at a uniform temperature of 300°C (Fig.). The ball is then subjected to the flow of air at 1 atm pressure and 25°C with a velocity of 3 m/s. The surface temperature of the ball eventually drops to 200°C. Determine the average convection heat transfer coefficient during this cooling process and estimate how long the process will take. T₁=25°C V = 3 m/s Air Steel ball 300°C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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