1. Consider the heat engine which consist of four reversible stages which used 0.001 mol of monoatomic gas. Initially, the gas has a volume of 1.0 L and temperature of 110 °C. Then the gas follows

Introduction to Chemical Engineering Thermodynamics
8th Edition
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Chapter1: Introduction
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1. Consider the heat engine which consist of four reversible stages which used 0.001 mol of
monoatomic gas. Initially, the gas has a volume of 1.0 L and temperature of 110 °C. Then the gas follows
the four path as describe below:
Step (i) to (ii): Isothermal expansion from 1.0 L to 2.0 Lat 110 °C
Step (ii) to (i): coling process at constant volume to 30 °C
Step (ii) to (iv): isothermal compression from 2.0 L to 1.0 L at 30 °C
Step (iv) to (i): heating process at constant volume back to 110 °C
(a) Sketch the P-V diagram for this heat engine. Please label the diagram appropriately
(b) Complete the table below:
W (1)
q (4)
S(U)
STEP
Step (i) to (ii)
Step (ii) to (iii)
Step (ii) to (iv)
Step (iv) to (i)
Complete cycle
(c) Compare the efficiency of this heat engine and Carnot engine by assuming the Carnot engine working
within the same two heat reservoirs.
Transcribed Image Text:1. Consider the heat engine which consist of four reversible stages which used 0.001 mol of monoatomic gas. Initially, the gas has a volume of 1.0 L and temperature of 110 °C. Then the gas follows the four path as describe below: Step (i) to (ii): Isothermal expansion from 1.0 L to 2.0 Lat 110 °C Step (ii) to (i): coling process at constant volume to 30 °C Step (ii) to (iv): isothermal compression from 2.0 L to 1.0 L at 30 °C Step (iv) to (i): heating process at constant volume back to 110 °C (a) Sketch the P-V diagram for this heat engine. Please label the diagram appropriately (b) Complete the table below: W (1) q (4) S(U) STEP Step (i) to (ii) Step (ii) to (iii) Step (ii) to (iv) Step (iv) to (i) Complete cycle (c) Compare the efficiency of this heat engine and Carnot engine by assuming the Carnot engine working within the same two heat reservoirs.
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