Patent ID: 6928832
Filing Date: 2005-08-16
Classification: B64D,F25B,Y02T

Abstract:
1. An electrically driven aircraft cabin ventilation and environmental control system comprising: means for capturing ram air; means for creating a first flow of said ram air and a second flow of said ram air; electrically driven means for receiving said first flow of ram air and for creating a pressurized ram air flow; first means for cooling said pressurized ram air flow, said first cooling means receiving said second ram air flow and using said second ram air flow as a heat sink; second means for receiving said cooled pressurized ram air from said first cooling means and for cooling and removing moisture from said cooled pressurized ram air; said second means including a reheater heat exchanger for cooling said cooled pressurized ram air received from said first cooling means and a condenser heat exchanger for condensing water vapor contained in said cooled pressurized ram air and for further cooling said cooled pressurized ram air; liquid from said condensed water vapor being separated in said condenser heat exchanger and being supplied to a means for precooling said second ram air flow prior to its use as a heat sink; said air exiting said condenser heat exchanger being delivered to an opposite side of said reheater heat exchanger to be warmed; expansion means for receiving said cooled ram air from said opposite side of said reheater heat exchanger and for expanding said cooled ram air; and means for delivering said cooled pressurized air from said expansion means to said cabin, said delivering means comprising means for passing air exiting said expansion means through said condenser heat exchanger prior to delivering said air to said cabin.