As a result of heat transfer to the surroundings during a constant-pressure process, 0.375 kg of steam in a frictionless piston-cylinder assembly experiences a decrease in entropy of 2.75 kJ/kgK. The initial temperature and pressure of the steam are 700 C and 1.6 MPa, respectively, and the process is internally reversible. Calculate the work and the heat transfer for this process and the total entropy change (Tsur. = 27 C).
As a result of heat transfer to the surroundings during a constant-pressure process, 0.375 kg of steam in a frictionless piston-cylinder assembly experiences a decrease in entropy of 2.75 kJ/kgK. The initial temperature and pressure of the steam are 700 C and 1.6 MPa, respectively, and the process is internally reversible. Calculate the work and the heat transfer for this process and the total entropy change (Tsur. = 27 C).
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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As a result of heat transfer to the surroundings during a constant-pressure process, 0.375 kg of steam in
a frictionless piston-cylinder assembly experiences a decrease in entropy of 2.75 kJ/kgK. The initial
temperature and pressure of the steam are 700 C and 1.6 MPa, respectively, and the process is
internally reversible. Calculate the work and the heat transfer for this process and the total entropy
change (Tsur. = 27 C).
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Step 1: Given data
VIEWStep 2: Calculating the specific entropy, internal energy and enthalpy at state 1
VIEWStep 3: Calculating the specific entropy, internal energy and enthalpy at state 2
VIEWStep 4: Calculating the heat transfer during the process
VIEWStep 5: Calculating the internal energy change during the process
VIEWStep 6: Calculating the work transfer during the process
VIEWStep 7: Calculating the total entropy change
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