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Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase and the temperature is 50 deg U. The tank is heated ail the water is in the vapor phase at a temperature of 120 deg C. This process requires 389 kJ of heat. The wall of the tank is maintained at constant temperature of 0.4 deg C. What is the entropy produced (kJ/K)? (Report answer to three decimal places)

Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase and the temperature is 50 deg U. The tank is heated ail the water is in the vapor phase at a temperature of 120 deg C. This process requires 389 kJ of heat. The wall of the tank is maintained at constant temperature of 0.4 deg C. What is the entropy produced (kJ/K)? (Report answer to three decimal places)

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase and the temperature is 50 deg C. The tank is heated until all the water is in the vapor phase at a temperature of 120 deg C. This process requires 389 kJ of heat. The wall of the tank is maintained at a constant temperature of 0,4 deg C. What is the entropy produced (kJ/K)? (Report answer to three decimal places)
Transcribed Image Text:Water (2 kg) is in a rigid tank where 22% of the water is in the liquid phase and the temperature is 50 deg C. The tank is heated until all the water is in the vapor phase at a temperature of 120 deg C. This process requires 389 kJ of heat. The wall of the tank is maintained at a constant temperature of 0,4 deg C. What is the entropy produced (kJ/K)? (Report answer to three decimal places)
Expert Solution
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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