Patent ID: 7730728

Claim:
System ( 10 ) for cooling a thermally loaded device on board an aircraft, comprising a distribution line ( 12 ) which is in communication with an installation space ( 14 ) of the thermally loaded device, a coolant supply line ( 20 ) which is in communication with a coolant source, a heat removal line ( 28 ) which is in communication with a source of pressure below atmospheric pressure, and a shut-off control device ( 34 ) which is adapted so as, in a first position, to separate the distribution line ( 12 ) from the coolant supply line ( 20 ) and connect the distribution line ( 12 ) to the heat removal line ( 28 ) and, in a second position, to connect the distribution line ( 12 ) to the coolant supply line ( 20 ) and separate the distribution line ( 12 ) from the heat removal line ( 28 ), characterized in that the coolant supply line ( 20 ) is connected to a region of a ram-air channel ( 22 ) to which a pressure above atmospheric pressure is applied, and in that the heat removal line ( 28 ) is connected to a region of the ram-air channel ( 22 ) to which a pressure below atmospheric pressure is applied.