A spherical ball with a diameter of 5 cm is suspended in the middle of a room with a temperature of 20°C. The temperature of the ball is 70°C. The heat transfer coefficient of the ball is 15 W/(m2.°C) and the emissivity of the ball surface is 0.8. What is the total heat transfer rate from the ball to the air assuming both temperatures are constant? Heat conduction through the suspension system can be neglected.
A spherical ball with a diameter of 5 cm is suspended in the middle of a room with a temperature of 20°C. The temperature of the ball is 70°C. The heat transfer coefficient of the ball is 15 W/(m2.°C) and the emissivity of the ball surface is 0.8. What is the total heat transfer rate from the ball to the air assuming both temperatures are constant? Heat conduction through the suspension system can be neglected.
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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A spherical ball with a diameter of 5 cm is suspended in the middle of a room with a temperature of 20°C. The temperature of the ball is 70°C. The heat transfer coefficient of the ball is 15 W/(m2.°C) and the emissivity of the ball surface is 0.8.
What is the total heat transfer rate from the ball to the air assuming both temperatures are constant? Heat conduction through the suspension system can be neglected.
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