Patent ID: 7975499

Claim:
A cooling system for an aircraft comprising: a refrigerant system, said refrigerant system being operable to direct refrigerant through a first heat exchanger to cool a second fluid; a use to be associated with an aircraft, said use circulating the second fluid through the first heat exchanger to be cooled; a control for controlling the refrigerant system, and for controlling a valve, said valve being operable to route the second fluid into the first heat exchanger during a first set of conditions, and to route the second fluid through a second heat exchanger under a second set of conditions, and ambient air from outside of the aircraft which is to receive the cooling system being directed over the second heat exchanger under said second set of conditions to cool the second fluid; and said second heat exchanger being associated with a condenser downstream of a compressor in the refrigerant system: and the control controls the refrigerant system to operate the refrigerant system under said first set of conditions, and to stop operation of the refrigerant system under second set of conditions.