In a container with a fixed volume of 0.5 m3, initially there is refrigerant -134a at a pressure of 200 kPa and a dryness fraction of 40%. Later, heat is transferred from a source at 35°C to the refrigerant until its pressure rises to 400 kPa. Calculate the entropy changes of the system, the surroundings, and the universe during the phase change.
In a container with a fixed volume of 0.5 m3, initially there is refrigerant -134a at a pressure of 200 kPa and a dryness fraction of 40%. Later, heat is transferred from a source at 35°C to the refrigerant until its pressure rises to 400 kPa. Calculate the entropy changes of the system, the surroundings, and the universe during the phase change.
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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In a container with a fixed volume of 0.5 m3, initially there is refrigerant -134a at a pressure of 200 kPa and a dryness fraction of 40%. Later, heat is transferred from a source at 35°C to the refrigerant until its pressure rises to 400 kPa. Calculate the entropy changes of the system, the surroundings, and the universe during the phase change.
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