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A rigid tank contains 5 kg of saturated vapor steam at
Chapter 7, Problem 41P(choose chapter or problem)
Problem 41P
A rigid tank contains 5 kg of saturated vapor steam at 100°C. The steam is cooled to the ambient temperature of 25°C.
(a) Sketch the process with respect to the saturation lines on a T-v diagram.
(b) Determine the entropy change of the steam, in kJ/K.
(c) For the steam and its surroundings, determine the total entropy change associated with this process, in kJ/K.
Questions & Answers
QUESTION:
Problem 41P
A rigid tank contains 5 kg of saturated vapor steam at 100°C. The steam is cooled to the ambient temperature of 25°C.
(a) Sketch the process with respect to the saturation lines on a T-v diagram.
(b) Determine the entropy change of the steam, in kJ/K.
(c) For the steam and its surroundings, determine the total entropy change associated with this process, in kJ/K.
ANSWER:
Step by step solution Step 1 of 8(a)Obtain the following properties of steam, from the “saturated water - temperature” table,at saturated initial temperature of 100 C in saturated vapor condition.Initial specific volume ,Initial internal energy,Initial entropy,A rigid tank contains the saturated vapor steam. Hence , specific volume remainsconstant. That is