Layers of 23-cm-thick meat slabs (k = 0.47 W/mK and = 0.13 10 -6 m
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Layers of 23-cm-thick meat slabs (k = 0.47 W/m·K and α = 0.13 × 10-6 m2/s) initially at a uniform temperature of 7°C are to be frozen by refrigerated air at 230°C flowing at a velocity of 1.4 m/s. The average heat transfer coefficient between the meat and the air is 20 W/m2·K. Assuming the size of the meat slabs to be large relative to their thickness, determine how long it will take for the center temperature of the slabs to drop to 218°C. Also, determine the surface temperature of the meat slab at that time.
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The center temperature of meat slabs is to be lowered to 18C during cooling The cooling time and the ...View the full answer
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Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
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