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

Claim 14:
15. The thermodynamic apparatus of claim 13, wherein the main passage comprises an inlet plenum and an outlet plenum, and the inlet plenum and outlet plenum are in fluid flow communication via a first sub-passage defined by the heat transfer unit for the transfer of the heat transfer medium through the first heat exchanger, the first sub-passage extends through the first heat exchanger, and the first heat exchanger is in flow series between a first inlet to the first sub-passage and an outlet from the first sub-passage, the first inlet configured to receive the heat transfer medium from the inlet plenum, and the outlet being configured to exhaust into the outlet plenum, and the first sub-passage comprises:
a second sub-passage which extends from a second inlet in fluid communication with the inlet plenum through the second heat exchanger and joins the first sub-passage between an outlet of the first heat exchanger and the outlet of the first sub-passage, such that flow through the first inlet and second inlet exit through the outlet.