초록 ▼

The invention is an energy recovery system (20) which uses excess air emanating from an aircraft cabin (16) to drive a turbo-compressor unit (30). The outlet air from the compressor (26) of turbo-compressor unit (30) is optionally fed, either around or through heat exchanger (24), back into the airc

The invention is an energy recovery system (20) which uses excess air emanating from an aircraft cabin (16) to drive a turbo-compressor unit (30). The outlet air from the compressor (26) of turbo-compressor unit (30) is optionally fed, either around or through heat exchanger (24), back into the aircraft cabin (16) inlet line, reducing the amount of bleed air required to power the aircraft ECS. Mass flow sensors (34) and (38) are used, via flow control valve (36) and flow control valve control unit (40), to monitor and control the amount of engine bleed air required at any point in time to satisfy overall ECS requirements. The energy recovery system (20″) may be utilized in conjunction with a motor driven cabin compressor (42) to reduce the output air requirements of the compressor and thus the weight and horsepower requirements of the compressor motor. In another embodiment, the outlet of the compressor (26) is used to supercharge the inlet of the motor driven cabin compressor (42), reducing the weight and horsepower motor requirements of the ECS.

대표청구항 ▼

An aircraft environmental control system for supplying a predetermined amount of conditioned air to an aircraft cabin, comprising: an electric motor; a cabin compressor arranged to be driven by said electric motor, said cabin compressor having an outlet adapted and arranged to supply heated and pres

An aircraft environmental control system for supplying a predetermined amount of conditioned air to an aircraft cabin, comprising: an electric motor; a cabin compressor arranged to be driven by said electric motor, said cabin compressor having an outlet adapted and arranged to supply heated and pressurized air to said cabin; a supercharging compressor connected in series between a source of fresh air and an inlet of said motor-driven cabin compressor; a free-running turbine mechanically coupled to said supercharging compressor to form a turbo-compressor arranged and adapted to be driven solely by discharge air emanating from said cabin, whereby the inlet of said motordriven cabin compressor may be provided with pressurized fresh air when said cabin is discharging pressurized air overboard.