Chapter 1 Basics of Heat Transfer1-79A hollow spherical iron container is filled with iced water at 0°C. The rate of heat loss from the sphere and the rate at which ice melts in the container are to be determined. Assumptions1Steady operating conditions exist since the surface temperatures of the wall remain constant at the specified values.2Heat transfer through the shell is one-dimensional. 3 Thermal properties of the iron shell are constant. 4 The inner surface of the shell is at the same temperature as the iced water, 0°C. PropertiesThe thermal conductivity of iron is k = 80.2 W/m⋅°C (Table A-3). The heat of fusion of water is given to be 333.7 kJ/kg. AnalysisThis spherical shell can be approximated as a plate of thickness 0.4 cm and area A = πD²=
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