**Problem Description:**1) Air contained in a piston–cylinder assembly undergoes the power cycle shown in the figure. Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle.**Graph Explanation:**The graph displays a pressure-volume (p-v) diagram illustrating a thermodynamic cycle for air in a piston-cylinder assembly. The axes are labeled as follows:- The vertical axis represents pressure (\(p\)) in bar.- The horizontal axis represents specific volume (\(v\)) in cubic meters per kilogram (\(m^3/kg\)).**Key Points and Processes:**1. **State 1 to State 3:** - Starting at the top left of the cycle at State 1, the cycle undergoes an isothermal process, indicated by the downward-sloping curve connecting State 1 and State 2, where the pressure decreases as volume increases. 2. **State 2 to State 3:** - The system then transitions from State 2 to State 3 through a horizontal process at low pressure, indicating a constant volume expansion (isochoric process). 3. **State 3 to State 1:** - The final segment of the cycle is a vertical line moving upward from State 3 back to State 1, indicating an isochoric process where the volume remains constant while the pressure increases.**Thermal Efficiency:**To evaluate the thermal efficiency, consider the energy exchanges and work done in each process. Analyzing these using the ideal gas law and considering the specific heat capacities at constant volume and pressure will provide insights into the thermal efficiency of the cycle.

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1) Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure. Assuming ideal gas behavior for the air, evaluate the thermal ... 5 efficiency of the cycle. Isothermal process (bar) 1 5

1) Air contained in a piston-cylinder assembly undergoes the power cycle shown in the figure. Assuming ideal gas behavior for the air, evaluate the thermal ... 5 efficiency of the cycle. Isothermal process (bar) 1 5

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

**Problem Description:**

1) Air contained in a piston–cylinder assembly undergoes the power cycle shown in the figure. Assuming ideal gas behavior for the air, evaluate the thermal efficiency of the cycle.

**Graph Explanation:**

The graph displays a pressure-volume (p-v) diagram illustrating a thermodynamic cycle for air in a piston-cylinder assembly. The axes are labeled as follows:
- The vertical axis represents pressure (\(p\)) in bar.
- The horizontal axis represents specific volume (\(v\)) in cubic meters per kilogram (\(m^3/kg\)).

**Key Points and Processes:**

1. **State 1 to State 3:**
- Starting at the top left of the cycle at State 1, the cycle undergoes an isothermal process, indicated by the downward-sloping curve connecting State 1 and State 2, where the pressure decreases as volume increases.

2. **State 2 to State 3:**
- The system then transitions from State 2 to State 3 through a horizontal process at low pressure, indicating a constant volume expansion (isochoric process).

3. **State 3 to State 1:**
- The final segment of the cycle is a vertical line moving upward from State 3 back to State 1, indicating an isochoric process where the volume remains constant while the pressure increases.

**Thermal Efficiency:**

To evaluate the thermal efficiency, consider the energy exchanges and work done in each process. Analyzing these using the ideal gas law and considering the specific heat capacities at constant volume and pressure will provide insights into the thermal efficiency of the cycle.

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