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Thermodynamics: An Engineering Approach | 8th Edition | ISBN: 9780073398174 | Authors: Yunus A. Cengel
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Answer: The radiator of a steam heating system has a

Chapter 7, Problem 731

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QUESTION:

The radiator of a steam heating system has a volume of 20 L and is filled with superheated water vapor at 200 kPa and 1508C. At this moment both the inlet and the exit valves to the radiator are closed. After a while the temperature of the steam drops to 408C as a result of heat transfer to the room air. Determine the entropy change of the steam during this process.

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QUESTION:

The radiator of a steam heating system has a volume of 20 L and is filled with superheated water vapor at 200 kPa and 1508C. At this moment both the inlet and the exit valves to the radiator are closed. After a while the temperature of the steam drops to 408C as a result of heat transfer to the room air. Determine the entropy change of the steam during this process.

ANSWER:

Step 1 of 4

The radiator of a steam heating system is initially filled with superheated steam. The valves are closed, and steam is allowed to cool until the temperature drops to a specified value by transferring heat to the room. The entropy change of the steam during this process is to be determined.

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