Environmental control system and methods of operating same

摘要

An aircraft (12) is provided including a fuselage comprising a passenger area (18), an occupancy zone (28), a recirculation zone (30), and a floor distribution section (22) that is coupled in flow communication to the occupancy zone (28) and the recirculation zone (30) of the aircraft (12). An air supply system (40) is coupled to the aircraft (12). The air supply system (40) includes an external air supply device (50) coupled to the vehicle and a supply duct (52) coupled in flow communication to the external air supply device (50). The air supply system (40) further includes an air supply outlet (54) coupled in flow communication to the supply duct (52) and in flow communication with at least one of the occupancy zone (30) and the floor distribution section (22). An air recirculation system (42) is coupled to the floor distribution section (22). The air recirculation system (42) includes a recirculation supply device (70) coupled to the aircraft (12) and recirculation duct coupled in flow communication to the recirculated supply device (70) and coupled to the floor distribution section (22). The air recirculation system (42) further includes a recirculation outlet (74) coupled in flow communication to the recirculation duct (72) and in flow communication with at least one of the recirculation zone (30) and floor distribution section (22).