One kilogram on a diatomic ideal gas undergoes the following four step process starting at Point A (100 k 300K, 5 m³) A => B Isothermal compression to 1 m³. B=> C Isobaric expansion to 900K. C=> D Adiabatic expansion to the original volume of 5 m³. D=> Alsochoric process to the original pressure of 100 kPa. ● ● ● (a) Determine P, V, and T, for points A, B, C & D. (b) What is AU, Q, W, AH & AS for each process of the cycle? (c) What is the efficiency of this cycle? d) Sketch a P-V diagram and T-S diagram, indicating P, V, T, for all points & AU, Q, W, AH & AS for each leg. Repeat problem one for a monoatomic ideal gas. Compare the Thermal Efficiency of a monoatomic
One kilogram on a diatomic ideal gas undergoes the following four step process starting at Point A (100 k 300K, 5 m³) A => B Isothermal compression to 1 m³. B=> C Isobaric expansion to 900K. C=> D Adiabatic expansion to the original volume of 5 m³. D=> Alsochoric process to the original pressure of 100 kPa. ● ● ● (a) Determine P, V, and T, for points A, B, C & D. (b) What is AU, Q, W, AH & AS for each process of the cycle? (c) What is the efficiency of this cycle? d) Sketch a P-V diagram and T-S diagram, indicating P, V, T, for all points & AU, Q, W, AH & AS for each leg. Repeat problem one for a monoatomic ideal gas. Compare the Thermal Efficiency of a monoatomic
Elements Of Electromagnetics
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
Transcribed Image Text:**Thermodynamics Cycle of a Diatomic Ideal Gas**
One kilogram of a diatomic ideal gas undergoes the following cycle starting at Point A (100 kPa, 300K, 5 m³):
1. **A ⇒ B: Isothermal compression** to 1 m³.
2. **B ⇒ C: Isobaric expansion** to 900K.
3. **C ⇒ D: Adiabatic expansion** to the original volume of 5 m³.
4. **D ⇒ A: Isochoric process** to the original pressure of 100 kPa.
**Questions:**
(a) Determine the pressure (P), volume (V), and temperature (T) at points A, B, C, and D.
(b) Calculate the changes in internal energy (ΔU), heat (Q), work (W), enthalpy (ΔH), and entropy (ΔS) for each process in the cycle.
(c) What is the efficiency of this cycle?
(d) Sketch a P-V diagram and a T-S diagram, indicating P, V, T for all points, and ΔU, Q, W, ΔH, and ΔS for each leg of the cycle.
**Additional Exercise:**
Repeat the above problem for a monoatomic ideal gas. Compare the thermal efficiency of a monoatomic ideal gas to the thermal efficiency of a diatomic ideal gas for the same cycle.
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