Aircraft Air Conditioning Pack

If the apu is not available a ground source of air can be used to supply the aircraft.

Aircraft air conditioning pack.

On other aircraft douglas aircraft dc 9 series the a c packs are located in the tail. Depending on the airport facilities this is either a preconditioned air system supplied by the airport or a mobile generator unit is used to pump air. A water separator collects water condensed by the cooling process to avoid icing. The air cycle system is often called the air conditioning package or pack.

On aircraft which use bleed air for the air conditioning it also provides a flow of air to feed the packs. Air cycle air conditioning is used on most turbine powered aircraft. Each acm and its components are often referred as an air conditioning pack the air cycle cooling process uses air instead of a phase changing material such as freon in the gas cycle. Vapor cycle air conditioning systems are often used on reciprocating aircraft.

Pack flow compressor outlet temperature by pass valve position and pack outlet temperature. Apu or engine 5 th and if necessary 9 th stage bleed air hot is pre cooled by fan air before entering the pack. Pressurization is achieved via the air pressurization system. However ram air can only be used at a level below 10 000ft.

An ecam electronic centralized aircraft monitor constantly measures the following parameters of the conditioning system. Citation needed the location of the air conditioning a c pack s depends on the design of the aircraft. Inside the pack bleed air is cooled by ram air through heat exchangers and an air cycle machine. In some designs they are installed in the wing to body fairing between the two wings beneath the fuselage.

Usually air conditioning packs are located left and right wing to body area near the main landing gear of an airplane. The air conditioning system is based on an air cycle machine acm cooling device which is mostly used in turbine powered aircraft.