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An unfrozen food product has a specific heat of 4 kJ/kg°C and a latent heat of fusion of 330 kJ/kg. Once it is frozen its specific heat is 1.98 kJ/kg°C. Its freezing point is -2°C. Determine the total amount of heat (W) to be removed to freeze 100 kg/h of the product from an initial temperature of 8°C to -18°C.

An unfrozen food product has a specific heat of 4 kJ/kg°C and a latent heat of fusion of 330 kJ/kg. Once it is frozen its specific heat is 1.98 kJ/kg°C. Its freezing point is -2°C. Determine the total amount of heat (W) to be removed to freeze 100 kg/h of the product from an initial temperature of 8°C to -18°C.

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
Problem 1.1P
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An unfrozen food product has a specific heat of 4 kJ/kg°C and a latent heat of fusion of
330 kJ/kg. Once it is frozen its specific heat is 1.98 kJ/kg°C. Its freezing point is -2°C.
Determine the total amount of heat (W) to be removed to freeze 100 kg/h of the product
from an initial temperature of 8°C to -18°C.

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