Aircraft air conditioning system and method for controlling an aircraft air conditioning system using a bypass valve

摘要

In a method for controlling an aircraft air conditioning system, a heating or cooling demand of an aircraft region to be air conditioned is determined. A volume flow of recirculation air discharged from the aircraft region to be air conditioned and a volume flow of compressed air into a mixing chamber of the aircraft air conditioning system is controlled such that the heating or cooling demand of the aircraft region to be air conditioned is met, while the volume flow of compressed air into the mixing chamber of the aircraft air conditioning system is minimized.

主权项

1. A method for controlling an aircraft air conditioning system, the method comprising the steps:
determining a heating or cooling demand of an aircraft region to be air conditioned, and controlling a volume flow of recirculation air discharged from the aircraft region to be air conditioned and a volume flow of compressed air into a mixing chamber of the aircraft air conditioning system such that the heating or cooling demand of the aircraft region to be air conditioned is met, while the volume flow of compressed air into the mixing chamber of the aircraft air conditioning system is reduced, wherein the volume flow of compressed air into the mixing chamber corresponds to a predetermined minimum value, when an air conditioning unit of the aircraft air conditioning system is operated with maximum efficiency to reduce the temperature of the compressed air at an exit region of the air conditioning unit and when a supply of hot compressed air to the air cooled by the air conditioning unit is interrupted, and wherein the method further comprises, in the event that a heating demand of the aircraft region to be air conditioned is determined and the volume flow of compressed air into the mixing chamber exceeds the predetermined minimum value: increasing the volume flow of recirculation air discharged from the aircraft region to be air conditioned into the mixing chamber, decreasing the volume flow of compressed air into the mixing chamber in dependence on the increase of the volume flow of recirculation air into the mixing chamber until the volume flow of compressed air into the mixing chamber has reached the predetermined minimum value, and stopping the increase of the volume flow of recirculation air into the mixing chamber, after the volume flow of compressed air into the mixing chamber has reached the predetermined minimum value, as soon as an actual temperature of the mixed air in the mixing chamber corresponds to a set temperature of the mixed air in the mixing chamber, the set temperature of the mixed air in the mixing chamber being associated with the heating demand of the aircraft region to be air conditioned.