Environmental control system

An environmental control system comprising an air compressor, an electric motor to drive said air compressor, an electrical power control and distribution system to receive electrical power and to direct at least some of that electrical power to drive said electric motor, a turbine to receive and expand air delivered thereto by said compressor to thereby cool said air, an electrical generator driven by said turbine, said electrical generator providing at least some of the electrical power received by said electrical power control system, and a water separator to remove water from air exhausted from said compressor, a first heat exchanger being provided downstream of said compressor to reduce the temperature of air exhausted from said compressor, said first heat exchanger being positioned to place air exhausted from said compressor in heat exchange relationship with a flow of ambient air, the water which in operation is removed by said water separator from air exhausted from said turbine being directed into said flow of ambient air upstream of said first heat exchanger.

An environmental control system comprising an air compressor, an electric motor to drive said air compressor, an electrical power control and distribution system to receive electrical power and to direct at least some of that electrical power to drive said electric motor, a turbine to receive and expand air delivered thereto by said compressor to thereby cool said air, an electrical generator driven by said turbine, said electrical generator providing at least some of the electrical power received by said electrical power control system, and a water separator to remove water from air exhausted from said compressor, a first heat exchanger being provided downstream of said compressor to reduce the temperature of air exhausted from said compressor, a second heat exchanger being provided downstream of said first heat exchanger, said second heat exchanger being adapted to put air exhausted from said first heat exchanger in heat exchange relationship with air exhausted from said water separator.

An environmental control system comprising an air compressor, an electric motor to drive said air compressor, an electrical power control and distribution system to receive electrical power and to direct at least some of that electrical power to drive said electric motor, a turbine to receive and expand air delivered thereto by said compressor to thereby cool said air, an electrical generator driven by said turbine, said electrical generator providing at least some of the electrical power received by said electrical power control system, and a water separator to remove water from air exhausted from said compressor, heating means being provided downstream of said turbine to increase the temperature of air exhausted from said turbine to a temperature sufficiently high to prevent the formation of ice in said air.

An environmental control system comprising an air compressor, an electric motor to drive said air compressor, an electrical power control and distribution system to receive electrical power and to direct at least some of that electrical power to drive said electric motor, a turbine to receive and expand air delivered thereto by said compressor to thereby cool said air, an electrical generator driven by said turbine, said electrical generator providing at least some of the electrical power received by said electrical power control system, and a water separator to remove water from air exhausted from said compressor, said air exhausted from said turbine being heated electrically to the temperature required of air constituting the output from said system.