A 3-m-internal-diameter spherical tank made of 1-cm-thick stainless steel is used to store iced water at 0°C. The tank is located outdoors at 25°C. Assuming the entire steel tank to be at 0°C and thus the thermal resistance of the tank to be negligible, determine (a) the rate of heat transfer to the iced water in the tank and (b) the amount of ice at 0°C that melts during a 24-hour period. The heat of fusion of water at atmospheric pressure is hif = 333.7 kJ/kg. The emissivity of the outer surface of the tank is 0.75, and the convection heat transfer coefficient on the outer surface can be taken to be 30 W/m2·K. Assume the average surrounding surface temperature for radiation exchange to be 15°C.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
A 3-m-internal-diameter spherical tank made of
1-cm-thick stainless steel is used to store iced water at 0°C.
The tank is located outdoors at 25°C. Assuming the entire
steel tank to be at 0°C and thus the thermal resistance of the tank to be negligible, determine (a) the rate of
transfer
ice at 0°C that melts during a 24-hour period. The heat of
fusion of water at atmospheric pressure is hif = 333.7 kJ/kg.
The emissivity of the outer surface of the tank is 0.75, and
the
can be taken to be 30 W/m2·K. Assume the average surrounding
surface temperature for
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
