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Problem 6.3 The radiator of a steam heating system has a volume of 20L and is filled with superheated water vapor at 200 kPa and 150°C. 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 40°C because of heat transfer to the room air. Determine the entropy change of the steam during this process. (Answer: AS=-0.132 kJ/K)

Problem 6.3 The radiator of a steam heating system has a volume of 20L and is filled with superheated water vapor at 200 kPa and 150°C. 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 40°C because of heat transfer to the room air. Determine the entropy change of the steam during this process. (Answer: AS=-0.132 kJ/K)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Problem 6.3 The radiator of a steam heating system has a volume of 20L and is filled with superheated water vapor at 200 kPa and 150°C. 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 40°C because of heat transfer to the room air. Determine the entropy change of the steam during this process. (Answer: AS=-0.132 kJ/K)
Transcribed Image Text:Problem 6.3 The radiator of a steam heating system has a volume of 20L and is filled with superheated water vapor at 200 kPa and 150°C. 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 40°C because of heat transfer to the room air. Determine the entropy change of the steam during this process. (Answer: AS=-0.132 kJ/K)
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