Fundamentals of Heat and Mass Transfer
Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470501979
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Chapter 10, Problem 10.29P

A disk-shaped turbine rotor is heat-treated by quenching in water at p = 1 atm. Initially, the rotor is at a uniform temperature of T i = 1100 ° C and the water is at its boiling point as the rotor is lowered into the quenching bath by a harness.

(a) Assuming lumped-capacitance behavior and constant properties for the rotor, carefully plot the rotor temperature versus time, pointing out important features of your T ( t ) curve. The rotor is in Orientation A.

(b) If the rotor is reoriented so that its large surfaces are horizontal (Orientation B), would the rotor temperature decrease more rapidly or less rapidly relative to Orientation A?

Chapter 10, Problem 10.29P, A disk-shaped turbine rotor is heat-treated by quenching in water at p=1 atm. Initially, the rotor

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