Patent ID: 9669936
Date: 2017-06-06
CPC Classifications: B64D,Y02T

Claim:
1. An aircraft air conditioning system comprising: a duct in an aircraft connected to an aircraft cabin and configured to flow pressurized cabin outflow air from the aircraft cabin; a turbine connected to the duct, the turbine configured to reduce a temperature of the pressurized cabin outflow air and to generate power and turbine outflow air; a compressor configured to generate a compressed inlet air stream, the compressor comprising one of a cabin compressor receiving ram air from an ambient air source, a boost compressor receiving bleed air from an aircraft engine compressor, or the aircraft engine compressor supplying aircraft supply air; and, an air conditioning pack configured to receive a reduced temperature cabin outflow air from the turbine, the reduced temperature cabin outflow air comprising a mixture of the turbine outflow air and ram air, and the air conditioning pack configured to receive the compressed inlet air stream from the compressor, the air conditioning pack comprising: