(a)
The final equilibrium temperature in the tank.
(a)
Explanation of Solution
Given:
The initial temperature of the water
The mass of the ice
The initial temperature of the ice
The melting temperature of the water
The heat of fusion of ice
Calculation:
Refer Table A-3, “Properties of common liquids, solids, and foods”,
The specific heat at constant pressure at room temperature for water is
The specific heat at constant pressure at room temperature for ice is
The melting temperature and the heat of fusion of ice
Write the expression for the energy balance equation for closed system.
Here, energy transfer into the control volume is
Substitute
Thus, the final equilibrium temperature in the tank is
(b)
The entropy generation during the process.
(b)
Explanation of Solution
Write the expression for the entropy balance equation of the system.
Here, rate of net entropy in is
Substitute
Thus, the entropy generation during the process is
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Chapter 8 Solutions
Fundamentals of Thermal-Fluid Sciences
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