Ideal cycle for gas turbines. Open cycle. Named after George Brayton.
The cycle is converted to a close cycle using a heat exchanger (aka. heat recovery steam generator).
Processes
1 → 2: isentropic compression (compressor) 2 → 3: constant-pressure heat addition (combustor) 3 → 4: isentropic expansion (turbine) 4 → 1: constant-pressure heat rejection