Patent ID: 11859549
Assignee: BAE SYSTEMS PLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 7:
8. The thermodynamic apparatus of claim 6, wherein:
the compressor module comprises a third heat exchanger located in the working fluid flow duct in flow series between the compressor module rotor and the compressor module outlet in the first heat transfer unit, and the third heat exchanger is configured to be operable to transfer heat to the first heat transfer unit from the working fluid passing the third heat exchanger;
the turbine module comprises a fourth heat exchanger located in the working fluid flow duct in flow series between the turbine module rotor and the turbine module outlet in the second heat transfer unit, and the fourth heat exchanger being configured such that it is operable to transfer heat received from the second heat transfer unit to the working fluid passing the fourth heat exchanger;
the first sub-passage extends through the third heat exchanger; and
the second sub-passage extends through the fourth heat exchanger.