A 5 cm thick beef steak is being frozen in a -35°C room. The product has 73% moisture content, density of 970 kg/m³, and thermal conductivity (frozen) of 1.1 W/(m K). Estimate the freezing time using Plank’s equation. The product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room provides a convective heat-transfer coefficient of 10 W/(
A 5 cm thick beef steak is being frozen in a -35°C room. The product has 73% moisture content, density of 970 kg/m³, and thermal conductivity (frozen) of 1.1 W/(m K). Estimate the freezing time using Plank’s equation. The product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room provides a convective heat-transfer coefficient of 10 W/(
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.17P: The heat transfer rate from hot air by convection at 100C flowing over one side of a flat plate with...
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A 5 cm thick beef steak is being frozen in a -35°C room. The
product has 73% moisture content, density of 970 kg/m³,
and thermal conductivity (frozen) of 1.1 W/(m K). Estimate
the freezing time using Plank’s equation. The product has an
initial freezing temperature of -1.75°C, and the movement of air in the freezing room provides a convective heat-transfer
coefficient of 10 W/(m² K)
a. tf = ... hour
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