DOC AIRBUS | AMM A320FAIR COOLING - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Air Cooling - Schematic ** ON A/C NOT FOR ALL
Air Cooling - Schematic ** ON A/C NOT FOR ALL
Air Cooling - Schematic ** ON A/C NOT FOR ALL
Air Cooling - Schematic ** ON A/C NOT FOR ALL
The fresh air quantity for air conditioning is defined by heating and cooling requirements. Since the bleed air supply is always at a higher temperature than that required for passenger comfort, a means of cooling this air is accomplished by two air conditioning packs. Each pack includes two heat exchangers which use ambient ram air as a heat sink, and a three-wheel boot-strap air cycle machine (Compressor, turbine and fan), a high pressure water extractor circuit and a bypass valve.
The two heat exchangers are attached to the cooling ram-air inlet. Each inlet has a regulator flap which operates automatically to control the cooling airflow through the heat exchangers. During take off and landing phases, the ram-air inlet doors are closed to prevent ingestion of foreign matter which may damage or contaminate the heat exchangers.
For the complete description of the environmental control system refer to 21-60-00.
Air Cooling - Schematic ** ON A/C NOT FOR ALL Air Cooling - Schematic ** ON A/C NOT FOR ALL Air Cooling - Schematic ** ON A/C NOT FOR ALL Air Cooling - Schematic ** ON A/C NOT FOR ALL The two heat exchangers are attached to the cooling ram-air inlet. Each inlet has a regulator flap which operates automatically to control the cooling airflow through the heat exchangers. During take off and landing phases, the ram-air inlet doors are closed to prevent ingestion of foreign matter which may damage or contaminate the heat exchangers.
For the complete description of the environmental control system refer to 21-60-00.
A. Flow Control and Indication
(Ref. AMM D/O 21-51-00-00)
The flow control and indication system controls the quantity of air supplied to the air conditioning packs.
(Ref. AMM D/O 21-51-00-00)
The flow control and indication system controls the quantity of air supplied to the air conditioning packs.
B. Air Cooling System
(Ref. AMM D/O 21-52-00-00)
The air cooling system cools the hot bleed air and then delivers it to the distribution system.
(Ref. AMM D/O 21-52-00-00)
The air cooling system cools the hot bleed air and then delivers it to the distribution system.
C. Pack Cooling - Air Control
(Ref. AMM D/O 21-53-00-00)
The pack cooling air control is done with components of the pack temperature control system (Ref. AMM D/O 21-61-00-00).
(Ref. AMM D/O 21-53-00-00)
The pack cooling air control is done with components of the pack temperature control system (Ref. AMM D/O 21-61-00-00).
D. Emergency Ram-Air Inlet
(Ref. AMM D/O 21-55-00-00)
The emergency ram-air inlet provides ram-air for ventilation of the aircraft in case of both packs OFF (This function can only be used during unpressurized
flight).
(Ref. AMM D/O 21-55-00-00)
The emergency ram-air inlet provides ram-air for ventilation of the aircraft in case of both packs OFF (This function can only be used during unpressurized
flight).
E. Conditioned Service Air System (CSAS)
(Ref. AMM D/O 21-58-00-00)
The Conditioned Service Air System (CSAS) is an air temperature conditioning system and is part of the aircraft's Fuel Tank Inerting System (FTIS) (Ref. 470000). The FTIS supplies inert gas into the fuel tanks and this causes all oxygen to flow out of the tanks. This prevents fire in the fuel tanks. The CSAS cools the hot engine bleed air and supplies the conditioned air to the Inert Gas Generation System (IGGS) (Ref. 471100). The CSAS is installed near the air conditioning pack 1 in the belly fairing.
(Ref. AMM D/O 21-58-00-00)
The Conditioned Service Air System (CSAS) is an air temperature conditioning system and is part of the aircraft's Fuel Tank Inerting System (FTIS) (Ref. 470000). The FTIS supplies inert gas into the fuel tanks and this causes all oxygen to flow out of the tanks. This prevents fire in the fuel tanks. The CSAS cools the hot engine bleed air and supplies the conditioned air to the Inert Gas Generation System (IGGS) (Ref. 471100). The CSAS is installed near the air conditioning pack 1 in the belly fairing.