A long cylinder of 30-mm diameter, initia1ly at a uniform temperature of 1000 K. is suddenly quenched
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A long cylinder of 30-mm diameter, initia1ly at a uniform temperature of 1000 K. is suddenly quenched in a large, constant-temperature oil bath at 350 K. The cylinder properties are k = 1.7 W/m ∙ K, c = 1600 J/kg ∙ K, and p = 400 kg/m3, while the convection coefficient is 50 W/m2 ∙ K.
(a) Calculate the time required for the surface of the cylinder to reach 500 K.
(b) Compute and plot the surface temperature history for 0 < t < 300s. If the oil were agitated, providing a convection coefficient of 250 W/m2 ∙ K, how would the temperature history change?
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Related Book For 
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
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