What is Gas Turbine Power Plant?
The gas turbine obtained its power by utilizing the energy of burnt gases and gases which are at high temperature and pressure by expanding through the several rings of fixed and moving blades.
Simple Open Cycle Gas Turbine/Air Standard Brayton (Joule) Cycle
| Process | Component | |
|---|---|---|
|
1 – 2 |
Isentropic compression | Compressor |
|
2 – 3 |
Isobaric heat adition |
Combustion chamber |
|
3 – 4 |
Isentropic expansion |
Turbine |
| 4 – 1 | Isobaric heat rejection |
To atmosphere |
- Thermal Efficiency
Effect of Modification on Performance of Simple Gas Turbine Cycle
| Modification | Work output | Thermal Efficiency |
|---|---|---|
|
Regeneration |
No effect | Increases |
|
Intercooling |
Increases |
Decreases |
|
Reheat |
Increases |
Decreases |
|
Reheat + Regeneration |
Increases | Increases |
|
Intercooling + Regeneration |
Increases |
Increases |
| Reheat + Intercooling | Increases |
Decreases |
| Reheat + Intercooling + Regeneration | Increases |
Increases |
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