Patent attributes
An environmental control system includes a plurality of inlets for receiving a plurality of mediums including a first medium and a second medium and an outlet for delivering a conditioned form of the second medium to at least one load of the aircraft. A ram air circuit includes a ram air shell having at least one heat exchanger positioned therein and a dehumidification system is arranged in fluid communication with the ram air circuit. A compression device is arranged in fluid communication with the ram air circuit and the dehumidification system. The compression device includes a compressor and a plurality of turbines including a first turbine and a second turbine operably coupled by a shaft. An outlet of the first turbine is directly coupled to an inlet of the second turbine, such that the first medium is provided to the first turbine and the second turbine in series.
