Patent ID: 6948331
Filing Date: 2005-09-27
Classification: B64D,F25B,Y02T

Abstract:
1. An environmental control system for an aircraft comprising; a vapor cycle system including a compressor wherein a refrigerant is compressed, a condenser wherein the refrigerant is liquefied, a throttle valve wherein the compressed and cooled refrigerant is expanded further reducing the temperature thereof, a primary evaporator wherein the expanded refrigerant is used to provide cooling to a cooling medium, and a secondary evaporator for receiving refrigerant from said primary evaporator; an air cycle system having compressor means for providing compressed air, means to cool the compressed air, means to expand the cooled and compressed air, means to expand the compressed and cooled air further reducing its temperature, a heat exchanger for receiving the air to provide cooling for a second cooling medium; an air to fuel heat exchanger located between said compressor means and said secondary evaporator of said vapor cycle system for receiving fuel after the fuel has passed through said condenser of said vapor cycle system and cooling the compressed air from said compressor means; and means to pass the pressurized air from said fuel to air heat exchanger to said secondary evaporator.