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.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.12P

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