Problem 4. A piston- cylinder device initially contains 0.5 m' of an ideal gas at 150 kPa and 20°C. 125,000 J of work is done on the system to compress the gas isothermally and irreversibly to a pressure of 400 kPa. Assume the surroundings are at a constant temperature of 20 °C and the ideal gas has a C, of 5R/2. a) What is the heat transfer (kJ)? b) What is the entropy generation as a result of this process?
Problem 4. A piston- cylinder device initially contains 0.5 m' of an ideal gas at 150 kPa and 20°C. 125,000 J of work is done on the system to compress the gas isothermally and irreversibly to a pressure of 400 kPa. Assume the surroundings are at a constant temperature of 20 °C and the ideal gas has a C, of 5R/2. a) What is the heat transfer (kJ)? b) What is the entropy generation as a result of this process?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Transcribed Image Text:Problem 4. A piston- cylinder device initially contains 0.5 m' of an ideal gas at 150 kPa and 20°C.
125,000 J of work is done on the system to compress the gas isothermally and irreversibly to a pressure of
400 kPa. Assume the surroundings are at a constant temperature of 20 °C and the ideal gas has a Cp, of
5R/2.
a) What is the heat transfer (kJ)?
b) What is the entropy generation as a result of this process?
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