A 5-cm-thick beef steak is being frozen in a -30°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 5 W/(m² K).

A 5-cm-thick beef steak is being frozen in a -30°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 5 W/(m² K).

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 1.63P: 1.63 Liquid oxygen (LOX) for the space shuttle is stored at 90 K prior to launch in a spherical...

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