Patent ID: 11878800
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 14:
15. An environmental control system of an aircraft comprising:
a plurality of inlets for receiving a plurality of mediums including a first medium, a second medium, and a third medium;
an outlet for delivering a conditioned flow of the second medium to one or more loads of the aircraft;
a ram air circuit including a ram air shell having at least one heat exchanger positioned therein;
at least one compressing device arranged in fluid communication with the ram air circuit and the outlet, the at least one compressing device including a first compressing device and a second compressing device and an outlet of the first compressing device is arranged in fluid communication with an inlet of the second compressing device, each of the first compressing device and the second compressing device including a compressor and at least one turbine operably coupled via a shaft, the compressor of the second compressing device being driven by the first medium in a first mode and being driven by the third medium in a second mode; and
a heat exchanger arranged between the outlet of the first compressing device and the inlet of the second compressing device, wherein within the heat exchanger, the second medium output from the at least one compressing device is cooled by the third medium, wherein the second medium is fresh air.