4. A box with total wall area of 0.6m2 and wall thickness 3cm is used to cool drinks. The inner and outer surface of the box are 0°C and 50°C respectively. Determine: (i) The rate of heat flow into the box (ii) The total heat flow in one day (iii) The mass of ice melted Take: Thermal conductivity of the box material to be 0.010 W/(m. K) Heat of fusion of ice to be Lf = 3.34 x 105 J/kg 86,400 seconds are in a day.
4. A box with total wall area of 0.6m2 and wall thickness 3cm is used to cool drinks. The inner and outer surface of the box are 0°C and 50°C respectively. Determine: (i) The rate of heat flow into the box (ii) The total heat flow in one day (iii) The mass of ice melted Take: Thermal conductivity of the box material to be 0.010 W/(m. K) Heat of fusion of ice to be Lf = 3.34 x 105 J/kg 86,400 seconds are in a day.
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter10: Thermal Physics
Section: Chapter Questions
Problem 7WUE: One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at...
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