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P2 R In P1 T2 S2 - S1 = Cpavg In $2- S, = s- s – R In2 P1

P2 R In P1 T2 S2 - S1 = Cpavg In $2- S, = s- s – R In2 P1

Elements Of Electromagnetics
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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Other bookmark on-cylinder device contains air at a temperature of T = 300 K and P = 100 kPa. Now, the gas is heated in an irreversible process. At the end of the process after the system has reached to thermodynamic equilibrium, the temperature of the gas is measured as 600 K and the pressure has reduced to 80 kPa. Calculate the change in the entropy s[kJ/kgK] of the gas during this process using the approximate method and the exact method given in equations a) and b) respectively. Also, sketch the process in a T-s diagram. Consider that this processes is IRREVERSIBLE. i) T2 S2 - S1 = Cp,avg In P2 R In P1 ii) $2- S,= s; - s - R In- P1 P Type here to search
Transcribed Image Text:Other bookmark on-cylinder device contains air at a temperature of T = 300 K and P = 100 kPa. Now, the gas is heated in an irreversible process. At the end of the process after the system has reached to thermodynamic equilibrium, the temperature of the gas is measured as 600 K and the pressure has reduced to 80 kPa. Calculate the change in the entropy s[kJ/kgK] of the gas during this process using the approximate method and the exact method given in equations a) and b) respectively. Also, sketch the process in a T-s diagram. Consider that this processes is IRREVERSIBLE. i) T2 S2 - S1 = Cp,avg In P2 R In P1 ii) $2- S,= s; - s - R In- P1 P Type here to search
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