What does the reversed ideal Stirling cycle consist of?a)Tow reversibl...
Reversed Ideal Stirling Cycle
The reversed ideal Stirling cycle is a thermodynamic cycle that describes the operation of a Stirling engine in reverse. The Stirling engine is a heat engine that operates on the principle of cyclic compression and expansion of gas at different temperature levels. The reversed ideal Stirling cycle consists of four processes: two reversible isothermal processes and two reversible isochoric processes.
1. Isothermal Compression Process:
- The reversed ideal Stirling cycle starts with an isothermal compression process.
- In this process, the working gas inside the engine is compressed while being kept at a constant temperature.
- The compression is done reversibly, meaning that it can be undone by an equal and opposite expansion process.
2. Isochoric Heat Rejection Process:
- After the isothermal compression process, the working gas undergoes a heat rejection process at constant volume.
- In this process, heat is transferred from the working gas to the surroundings, causing a decrease in its temperature.
- The heat rejection is done reversibly, meaning that it can be undone by an equal and opposite heat addition process.
3. Isothermal Expansion Process:
- The third process in the reversed ideal Stirling cycle is an isothermal expansion process.
- In this process, the working gas is expanded while being maintained at a constant temperature.
- The expansion is done reversibly, meaning that it can be undone by an equal and opposite compression process.
4. Isochoric Heat Addition Process:
- The final process in the reversed ideal Stirling cycle is a heat addition process at constant volume.
- In this process, heat is transferred from the surroundings to the working gas, causing an increase in its temperature.
- The heat addition is done reversibly, meaning that it can be undone by an equal and opposite heat rejection process.
Summary:
The reversed ideal Stirling cycle consists of two reversible isothermal processes and two reversible isochoric processes. The isothermal processes involve compression and expansion of the working gas while maintaining a constant temperature, while the isochoric processes involve heat rejection and heat addition at constant volume. This cycle describes the operation of a Stirling engine in reverse and can be used to analyze the thermodynamic behavior of the engine.
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