A spherical pure aluminum ball has a diameter of 9 mm and initially at 750°C. It is exposed to ambient air at 30°C with the average convective heat transfer coefficient 50 W/m?. i. How long it is required for spherical ball to reach 90°C? ii. Calculate the total heat transferred during the process.
A spherical pure aluminum ball has a diameter of 9 mm and initially at 750°C. It is exposed to ambient air at 30°C with the average convective heat transfer coefficient 50 W/m?. i. How long it is required for spherical ball to reach 90°C? ii. Calculate the total heat transferred during the process.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
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ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter3: Transient Heat Conduction
Section: Chapter Questions
Problem 3.10P: 3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the...
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![A spherical pure aluminum ball has a diameter of 9 mm and initially at 750°C. It is
exposed to ambient air at 30°C with the average convective heat transfer coefficient 50
W/m?.
i. How long it is required for spherical ball to reach 90°C?
ii. Calculate the total heat transferred during the process.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff366d9a2-8fef-4b86-9db9-e36ba6272597%2Feabc7ead-effb-4756-a315-9d8afc642634%2Fds22dlq.jpeg&w=3840&q=75)
Transcribed Image Text:A spherical pure aluminum ball has a diameter of 9 mm and initially at 750°C. It is
exposed to ambient air at 30°C with the average convective heat transfer coefficient 50
W/m?.
i. How long it is required for spherical ball to reach 90°C?
ii. Calculate the total heat transferred during the process.
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