Number 3 A food product with 73% moisture content in a 10 cm diameter can wants to be frozen. The density of the product is 970 kg/m³, the thermal conductivity is 1.2 W/(m²K), and the initial freezing temperature is -1.75°C. After 15 hours in the freezing medium -25°C, the product temperature becomes -10°C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h= answer in W/(m²K)

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
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Number 3

A food product with 73% moisture content in a 10 cm diameter can wants to be frozen. The density of the product is 970 kg/m³, the thermal conductivity is 1.2 W/(m²K), and the initial freezing temperature is -1.75°C. After 15 hours in the freezing medium -25°C, the product temperature becomes -10°C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder.

h= answer in W/(m²K)

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