System And Method For Air Conditioning An Aircraft Cabin With Improved Cooling Capacity

System for air conditioning an aircraft cabin, having:

• an air conditioning unit connected to a central mixer in order to supply the central mixer with air at a desired low temperature,
• a first recirculation system which is designed to remove recirculation air from a first aircraft cabin region and is connected to the central mixer in order to lead the recirculation air from the first aircraft cabin region into the central mixer, and
• a second recirculation system which is designed to remove recirculation air from a second aircraft cabin region and is connected to a first and a second local mixer in order to lead the recirculation air from the second aircraft cabin region into the first and the second local mixer, the local mixers each being connected to the central mixer in order to supply mixed air from the central mixer into the local mixers,
• characterised in that the second recirculation system comprises:
• a first recirculation air distribution duct which connects a central recirculation air removal duct, connected to the second aircraft cabin region, to the first local mixer,
• a second recirculation air distribution duct which connects the central recirculation air removal duct to the second local mixer, and
• at least one cooling unit which is arranged in the first recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the first local mixer and/or in the second recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the second local mixer and is designed to cool the recirculation air removed from the second aircraft cabin region to a desired temperature.

Method for air conditioning an aircraft cabin, having the steps:

• producing air at a desired low temperature by means of an air conditioning unit,
• supplying the air produced by the air conditioning unit into a central mixer,
• removing recirculation air from a first aircraft cabin region by means of a first recirculation system,
• leading the air removed from the first aircraft cabin region by the first recirculation system into the central mixer,
• removing recirculation air from a second aircraft cabin region by means of a second recirculation system,
• leading the air removed from the second aircraft cabin region by the second recirculation system into a first and a second local mixer, and
• supplying mixed air from the central mixer into the local mixers,
• characterised in that the recirculation air removed from the second aircraft cabin region is supplied into the first local mixer through a first recirculation air distribution duct which connects a central recirculation air removal duct, connected to the second aircraft cabin region, to the first local mixer, and is supplied into the second local mixer through a second recirculation air distribution duct which connects the central recirculation air removal duct to the second local mixer, and in that the recirculation air removed from the second aircraft cabin region is cooled to a desired temperature by at least one cooling unit of the second recirculation system before it is supplied into the first and/or the second local mixer, which cooling unit is arranged in the first recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the first local mixer and/or in the second recirculation air distribution duct, in relation to the flow direction of the recirculation air removed from the second aircraft cabin region in the second recirculation system, upstream of the second local mixer.)