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Copper spheres 20 mm in diameter are quenched by being dropped into a tank of water that is maintained at T = 280 K. The spheres may be assumed to be falling at a terminal velocity of Voo = 2.17 m/s through the water. Determine the height (H) of the water tank needed to cool the spheres from an initial uniform temperature of To = 360 K to a surface temperature of T = 310 K. Hint: Estimate h in order to calculate the Biot number.

Copper spheres 20 mm in diameter are quenched by being dropped into a tank of water that is maintained at T = 280 K. The spheres may be assumed to be falling at a terminal velocity of Voo = 2.17 m/s through the water. Determine the height (H) of the water tank needed to cool the spheres from an initial uniform temperature of To = 360 K to a surface temperature of T = 310 K. Hint: Estimate h in order to calculate the Biot number.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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. Copper spheres 20 mm in diameter are quenched by being dropped into a tank of water that is maintained at T= 280 K. The spheres may be assumed to be falling at a terminal velocity of Vo = 2.17 m/s through the water. Determine the height (H) of the water tank needed to cool the spheres from an initial uniform temperature of To = 360 K to a surface temperature of T = 310 K. Hint: Estimate h in order to calculate the Biot number.
Transcribed Image Text:. Copper spheres 20 mm in diameter are quenched by being dropped into a tank of water that is maintained at T= 280 K. The spheres may be assumed to be falling at a terminal velocity of Vo = 2.17 m/s through the water. Determine the height (H) of the water tank needed to cool the spheres from an initial uniform temperature of To = 360 K to a surface temperature of T = 310 K. Hint: Estimate h in order to calculate the Biot number.
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