Brayton (Gas Turbine) Cycle Calculator
Calculate the thermodynamic properties of an ideal Brayton cycle for gas turbine engines
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Cycle Properties
Thermal Efficiency
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Back Work Ratio
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Net Work Output
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kJ/kg
State Point Properties
| State | Temperature | Pressure | Specific Volume |
|---|---|---|---|
| 1 (Compressor Inlet) | – | – | – |
| 2 (Compressor Exit) | – | – | – |
| 3 (Turbine Inlet) | – | – | – |
| 4 (Turbine Exit) | – | – | – |
Cycle Diagram
1-2: Isentropic Compression
2-3: Isobaric Heat Addition
3-4: Isentropic Expansion
4-1: Isobaric Heat Rejection
About the Brayton Cycle
The Brayton cycle is a thermodynamic cycle that describes the workings of gas turbine engines. It consists of four processes:
- Isentropic compression (in a compressor)
- Isobaric heat addition (in a combustion chamber)
- Isentropic expansion (in a turbine)
- Isobaric heat rejection
This calculator computes the thermal efficiency, back work ratio, and other important parameters of the ideal Brayton cycle.
Formulas Used
Thermal Efficiency: ηth = 1 – (1/rp(γ-1)/γ)
Back Work Ratio: BWR = Wcompressor/Wturbine
Net Work Output: Wnet = Wturbine – Wcompressor