A rigid tank contains 15 kg of water at 120degc and 500 kpa


A rigid tank contains 1.5 kg of water at 120°C and 500 kPa. Now 22 kJ of shaft work is done on the system and the final temperature in the tank is 95°C. If the entropy change of water is zero and the surroundings are at 15°C, determine

(a) The final pressure in the tank,

(b) The amount of heat transfer between the tank and the surroundings, and

(c) The entropy generation during this process.

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Mechanical Engineering: A rigid tank contains 15 kg of water at 120degc and 500 kpa
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