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Engineering, 01.07.2021 19:00 shannonderemer

The radiator of a steam heating system has a volume of 20 L and is filled with superheated water vapor at 200 kPa and 150oC. 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 40oC as a result of heat transfer to the room air. Determine the entropy change of the steam during this process

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