AIRCRAFT AIR CONDITIONING SYSTEM COMPRISING A SEPARATE REFRIGERATION CYCLE

摘要

The invention pertains to an air-conditioning system for an aircraft. The air-conditioning system comprises a compressed air branch for conveying externally supplied and pressurized air, preferably bleed air. Furthermore, a cooling circuit (9) for conveying preferably liquid refrigerant is provided and extends through a ram air duct (18, 34). The system also comprises a first heat exchanger (14) for the heat transfer between the compressed air branch (8) and the cooling circuit (9), a compressed air turbine (19) that is arranged in the compressed air branch (8) and a cooling circuit compressor (25) that is arranged in the cooling circuit (9) and mechanically coupled to the compressed air turbine (19). One of the advantages of the invention can be seen in that the system can have a modular design and be positioned at optimal locations in the aircraft due to the separation of the compressed air branch and the cooling circuit, In this way, the length of hot compressed air ducts can be shortened. The invention furthermore pertains to a method for air-conditioning an aircraft and an aircraft with such an air-conditioning system.