Consider that a gas is behaving ideally in a closed system. Its initial conditions are shown below: T1=303.15 K Pi=100 kPa. It undergoes the following processes: a. Adiabatic compression to 500 kPa followed by cooling at constant pressure to 303.15K and returns to its original state under isothermal expansion. Assume that the process is mechanically reversible. b. Assume that the system underwent the same cyclic process under irreversible process with an efficiency of 80%. Calculate the heat and work requirement, the change in the internal energy and change in enthalpy for each condition. Assume that Cp = 7/2R and Cv = 5/2R.
Consider that a gas is behaving ideally in a closed system. Its initial conditions are shown below: T1=303.15 K Pi=100 kPa. It undergoes the following processes: a. Adiabatic compression to 500 kPa followed by cooling at constant pressure to 303.15K and returns to its original state under isothermal expansion. Assume that the process is mechanically reversible. b. Assume that the system underwent the same cyclic process under irreversible process with an efficiency of 80%. Calculate the heat and work requirement, the change in the internal energy and change in enthalpy for each condition. Assume that Cp = 7/2R and Cv = 5/2R.
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:Consider that a gas is behaving ideally in a closed system. Its initial conditions are shown below:
Tı=303.15 K
Pi=100 kPa.
It undergoes the following processes:
a. Adiabatic compression to 500 kPa followed by cooling at constant pressure to 303.15K
and returns to its original state under isothermal expansion. Assume that the process is
mechanically reversible.
b. Assume that the system underwent the same cyclic process under irreversible process with
an efficiency of 80%.
Calculate the heat and work requirement, the change in the internal energy and change in enthalpy
for each condition. Assume that Cp = 7/2R and Cv = 5/2R.
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