One kilogram on a diatomic ideal gas undergoes the following four step process starting at Point A (100 kPa, 300K, 4 m³) ● ● A => B Isothermal compression that quarters the volume (to 1 m³) Isobaric expansion that triples the temperature (to 900K) Adiabatic expansion to the original volume (to 4 m³). Isochoric process to the original pressure (to 100 kPa). B => C • C => D • D=> A (a) Determine P, V, and T, for all points. (b) What is AU, Q, W, AH & AS for each leg of the cycle?
One kilogram on a diatomic ideal gas undergoes the following four step process starting at Point A (100 kPa, 300K, 4 m³) ● ● A => B Isothermal compression that quarters the volume (to 1 m³) Isobaric expansion that triples the temperature (to 900K) Adiabatic expansion to the original volume (to 4 m³). Isochoric process to the original pressure (to 100 kPa). B => C • C => D • D=> A (a) Determine P, V, and T, for all points. (b) What is AU, Q, W, AH & AS for each leg of the cycle?
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:**Problem 1**
One kilogram of a diatomic ideal gas undergoes the following four-step process starting at Point A (100 kPa, 300K, 4 m³):
- **A => B**: Isothermal compression that quarters the volume (to 1 m³).
- **B => C**: Isobaric expansion that triples the temperature (to 900K).
- **C => D**: Adiabatic expansion to the original volume (to 4 m³).
- **D => A**: Isochoric process to the original pressure (to 100 kPa).
Tasks:
(a) Determine P, V, and T for all points.
(b) Calculate ΔU, Q, W, ΔH, and ΔS for each leg of the cycle.
(c) Find the efficiency of this cycle.
(d) Sketch a P-V diagram and T-S diagram, indicating P, V, T for all points & ΔU, Q, W, ΔH & ΔS for each leg.
**Problem 2**
Repeat problem one for a monoatomic ideal gas. Compare the Thermal Efficiency of a monoatomic ideal gas to the Thermal Efficiency of a diatomic ideal gas for this same cycle.
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