Number 2 A piece of beef steak 10 cm thick will be frozen in the freezer room -30°C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W/(m²K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W/(m²K). t f = answer in hour

Number 2 A piece of beef steak 10 cm thick will be frozen in the freezer room -30°C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W/(m²K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W/(m²K). t f = answer in hour

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.2: Water Heater Branch Circuit

Problem 8R: For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature...

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Number 2 A piece of beef steak 7 cm thick will be frozen in the freezer room -30°C. This product has a moisture content of 73%, a density of 970 kg/m³, and a thermal conductivity (frozen) of 1.1 W/(m²K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75°C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 15 W/(m²K). t f = answer in hour
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