Patent ID: 8292222

Claim:
An aircraft air-conditioning system ( 1 ) for an aircraft containing a plurality of zones ( 2 , 4 ), comprising a cold air source, a first line ( 6 ) for feeding cold, non-recirculated air at an actual temperature T 1 act. , wherein the first line ( 6 ) is fed from the cold air source and the first line ( 6 ), downstream and/or upstream of a branching point ( 10 ) at which air is tapped off for a plurality of zones ( 2 , 4 ), feeds cold air at least to one further region that is provided for passengers and/or freight, a second line ( 14 ) which branches off a portion of the air from the first line ( 6 ) at the branching point ( 10 ) and feeds this air to the plurality of zones ( 2 , 4 ) of the aircraft, wherein warm air is fed into the second line ( 14 ) through a first trim valve ( 12 ) so that the air in the second line ( 14 ) is heated to the actual temperature T 2 act higher than about 0° C., and a first zone feed line ( 24 ) feeding the air downstream of the first trim valve ( 12 ) to a first zone ( 2 ), wherein in the first zone feed line ( 24 ) a second trim valve ( 26 ) is arranged, through which warm air is fed into the first zone feed line ( 24 ) so that the air in the first zone feed line ( 24 ) is heated to the actual temperature Tzf 1 act. , characterised in that the first line ( 6 ) feeds air to a mixing chamber, to which is also fed recirculated air.