ENVIRONMENTAL CONTROL SYSTEM UTILIZING CABIN AIR TO DRIVE A POWER TURBINE OF AN AIR CYCLE MACHINE

摘要

A system (100), which includes a plurality of heat exchangers (110, 130) and a compressing device (120), prepares a medium bled from a low-pressure location of an engine and flowing through the plurality of heat exchangers (110, 130) into a chamber (102). The compressing device (120) is in communication with the plurality of heat exchangers (110, 130) and regulates a pressure of the medium flowing through the plurality of heat exchangers (110, 130). The compressing device (120) includes a turbine (142) that provides supplemental power to the compressing device (120) based on a pressure of the medium in the chamber (102).