Question
An aluminum sphere (k-48 W/mK, a=1.3x105 m/s) is heated to 700C and then, quenched in oil that is at 45C. The convective heat transfer coefficient
An aluminum sphere (k-48 W/mK, a=1.3x105 m/s) is heated to 700C and then, quenched in oil that is at 45C. The convective heat transfer coefficient between the sphere and oil is 300 W/mK. For this system, The Biot number is determined as 0.125 from Heisler Chart. The time (t)required for the temperature to drop to 200C is 132 seconds. Which of the following is equal to diameter and dimensionless time (Fourier number), respectively
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Elementary Principles of Chemical Processes
Authors: Richard M. Felder, Ronald W. Rousseau
3rd Edition
978-0471687573, 9788126515820, 978-0-471-4152, 0471720631, 047168757X, 8126515821, 978-0471720638
