A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the relationship between pressure and volume is given by PV= constant The initial volume is 0.1 m, and the final volume is 0.2 m. The initial pressure is 3 bar,. The change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant changes in kinetic or potential energy. Answer the following questions : (a) What are the main assumptions. (b) Drive an expression of work for the polytropic process. (c) Determine the work for the process, in kJ, if n=1.5. pV15 = constant (d) Determine the net heat transfer for the process, in kJ Area = work
A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the relationship between pressure and volume is given by PV= constant The initial volume is 0.1 m, and the final volume is 0.2 m. The initial pressure is 3 bar,. The change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant changes in kinetic or potential energy. Answer the following questions : (a) What are the main assumptions. (b) Drive an expression of work for the polytropic process. (c) Determine the work for the process, in kJ, if n=1.5. pV15 = constant (d) Determine the net heat transfer for the process, in kJ Area = work
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
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:A gas in a piston-cylinder assembly. The gas undergoes an expansion process for which the
relationship between pressure and volume is given by
PV = constant
The initial volume is 0.1 m, and the final volume is 0.2 m. The initial pressure is 3 bar,. The
change in internal energy of the gas in the process is AU = - 18.4 kJ. There are no significant
changes in kinetic or potential energy.
Answer the following questions :
(a) What are the main assumptions.
(b) Drive an expression of work for the polytropic process.
= constant
(c) Determine the work for the process, in kJ, if n =1.5.
Area = work
(d) Determine the net heat transfer for the process, in kJ
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