An ice-ball of initial diameter 0.06 m is suspended in a room at 30°C. The ice melts by absorbing heat from the ambient, the surface heat transfer coefficient being 11.4 W/m² °C. The air in the room is essentially dry. If the shape of the ball remains unchanged, calculate the time required for reduction in its volume by 40%. The density of ice is 929 kg/m² and its latent heat of fusion is 3.35 x 105 J/kg.

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
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An ice-ball of initial diameter 0.06 m is suspended in a room at 30°C. The
ice melts by absorbing heat from the ambient, the surface heat transfer coefficient being
11.4 W/m² °C. The air in the room is essentially dry. If the shape of the ball remains unchanged,
calculate the time required for reduction in its volume by 40%. The density of ice is 929 kg/m³
and its latent heat of fusion is 3.35 x 105 J/kg.
Transcribed Image Text:An ice-ball of initial diameter 0.06 m is suspended in a room at 30°C. The ice melts by absorbing heat from the ambient, the surface heat transfer coefficient being 11.4 W/m² °C. The air in the room is essentially dry. If the shape of the ball remains unchanged, calculate the time required for reduction in its volume by 40%. The density of ice is 929 kg/m³ and its latent heat of fusion is 3.35 x 105 J/kg.
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