AIRCRAFT AIR CONDITIONING SYSTEM WITH A REDUCED PROCESS AIR DEMAND

摘要

An aircraft air conditioning system (10) comprises an air conditioning unit (12) adapted to be supplied with compressed process air and to generate cold fresh air, a mixer (22) adapted to mix the cold fresh air generated by the air conditioning unit (12) with recirculation air recirculated from an aircraft region (26) to be air conditioned, an air outlet (32) adapted to direct mixed air from the mixer (22) into the aircraft region (26) to be air conditioned, a first sensor (34) adapted to detect an actual temperature (T act ) in the aircraft region (26) to be air conditioned, a second sensor (36) adapted to detect a temperature (T mix ) of the mixed air directed into the aircraft region (26) to be air conditioned, and a control unit (40) adapted to control an operation of the air conditioning unit (12) in dependence on a difference between the temperature (T mix ) of the mixed air directed into the aircraft region (26) to be air conditioned and the actual temperature (T act ) in the aircraft region (26) to be air conditioned and preferably also in dependence on a change rate of the actual temperature (T act ) in the aircraft region (26) to be air conditioned.