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1. A stainless steel cylindrical shaft of 25-cm-diameter comes out of an oven at a uniform temperature of 800°C . The shaft is then allowed to cool slowly in an environment chamber at 150°C with an average heat transfer coefficient of h = 80 W/m2 · °C. Determine the temperature at the center of the shaft one hour after the start of the cooling process. Also, determine the heat transfer per unit length of the shaft during this time period.

1. A stainless steel cylindrical shaft of 25-cm-diameter comes out of an oven at a uniform temperature of 800°C . The shaft is then allowed to cool slowly in an environment chamber at 150°C with an average heat transfer coefficient of h = 80 W/m2 · °C. Determine the temperature at the center of the shaft one hour after the start of the cooling process. Also, determine the heat transfer per unit length of the shaft during this time period.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Answer only if you are 100% sure , before writing any coefficent value from any graph give reference or draw the similar graph and try to explain , i need well written solution  with 100% accuracy.

1. A stainless steel cylindrical shaft of 25-cm-diameter comes out of an oven at a uniform temperature of 800°C . The shaft is then allowed to cool slowly in an environment chamber at 150°C with an average heat transfer coefficient of h = 80 W/m2 · °C. Determine the temperature at the center of the shaft one hour after the start of the cooling process. Also, determine the heat transfer per unit length of the shaft during this time period. Properties are k 14.9 W/m · 3.95 x 10-6 m2/s h = 80 W/m2.°C Qrar = mC,(T. – T) Stainless steal shaft - D = 20 cm T; = 800°C
Transcribed Image Text:1. A stainless steel cylindrical shaft of 25-cm-diameter comes out of an oven at a uniform temperature of 800°C . The shaft is then allowed to cool slowly in an environment chamber at 150°C with an average heat transfer coefficient of h = 80 W/m2 · °C. Determine the temperature at the center of the shaft one hour after the start of the cooling process. Also, determine the heat transfer per unit length of the shaft during this time period. Properties are k 14.9 W/m · 3.95 x 10-6 m2/s h = 80 W/m2.°C Qrar = mC,(T. – T) Stainless steal shaft - D = 20 cm T; = 800°C
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