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//example 3
//violation of second law
clear
clc
disp('from R-134a tables')
se=1.7148 //specific entropy in final state in kJ/kg-K
si=1.7395 //initial specific entropy in kJ/kg-K
disp('therefore,se<si,whereas for this process the second law requires that se>=si.The process described involves a violation of the second law and thus would be impossible.')
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