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US 2009/0260387 A1Published application
Aircraft supplemental cooling system
AssigneeHamilton Sundstrand Corporation
InventorGregory L. DeFrancesco
Life of this patent
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Abstract
A cooling system for an aircraft has a refrigerant system to cool a second fluid for a use associated with an aircraft. A valve is operable to route the second fluid to be cooled by the refrigerant under a first set of conditions, and to route the second fluid to be cooled by ambient air from outside of the aircraft under a second set of conditions.
Claims18
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.
A method for operating a cooling system for an aircraft including the steps of:
- directing refrigerant through a first heat exchanger to cool a second fluid;
- a use to be associated with an aircraft circulating the second fluid through the first heat exchanger to be cooled;
- controlling a valve 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 being directed over the second heat exchanger under said second set of conditions to cool the second fluid.
Dependencies are inferred from the claim text.