Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Entropy
In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its m…
Question
**Problem Statement:** Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase, and the temperature is 50°C. The tank is heated until all the water is in the vapor phase at a temperature of 120°C. This process requires 389 kJ of heat. The wall of the tank is maintained at a constant temperature of 0.4°C. What is the entropy produced (kJ/K)? (Report your answer to three decimal places.)
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Transcribed Image Text:**Problem Statement:** Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase, and the temperature is 50°C. The tank is heated until all the water is in the vapor phase at a temperature of 120°C. This process requires 389 kJ of heat. The wall of the tank is maintained at a constant temperature of 0.4°C. What is the entropy produced (kJ/K)? (Report your answer to three decimal places.)
Expert Solution
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Step 1

Given Data,

m = Mass of the water in the tank = 2 Kg

Since, 22% of water is in liquid phase. So, dryness fraction at initial state 1 is x1 = 0.78

T1 = Initial temperature = 50°C

T2 = Final temperature = 120°C

The final point is saturated vapor at 120°C temperature

To determine the entropy generation in this heating process

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