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ventilation air is sucked from the cockpit through the different cockpit panels.
MAIN COMPONENTS
Two electric fans operate continuously as long as the aircraft electrical system is supplied
They make the air circulate around the avionics equipment.
SKIN AIR INLET AND EXTRACT VALVES
These valves admit air from outside the aircraft and evacuate hot air from inside the
aircraft.
SKIN EXCHANGE INLET AND OUTLET BYPASS VALVES
These valves permit air to circulate between the avionics bay and the space under the
cargo compartment floor.
AIR CONDITIONING INLET VALVE
This valve opens to permit the air conditioning circuit to supply fresh air to the avionics bay
SKIN EXCHANGE ISOLATION VALVE
This valve connects or isolates the skin heat exchanger.
AVIONICS EQUIPMENT VENTILATION COMPUTER (AEVC)
The AEVC controls the operation of all fans and valves in the avionics ventilation system
CCM ALL
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━┓
┃I  ~-~ A318                     ┃AIR COND/PRESS/VENT ┃1.21.30     P 3   ┃
┃ aw aw ,, ~% A319               ┃                    ┃                  ┃
┃ Lli,~ A320                     ┃                    ┃                  ┃
┃                                ┃                    ┣━━━━┳━━━━┫
┃      A~7-~'M" A321             ┃      VENTILATION   ┃SEQ 001 ┃REV 26  ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                    ┃        ┃        ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━┻━━━━┻━━━━┛
NORMAL OPERATION, OPEN-CIRCUIT CONFIGURATION
GROUND OPERATIONS
The open-circuit configuration operates when skin temperature is above the on-ground
threshold.
On-ground threshold = + 12~C (53~F), temperature increasing, or
                       = + 9~C (48~F), temperature decreasing.
AVIONIC BAY
┏━━━━━━━━━━━━━━━━━━━┓
┃J                                     ┃
┣━━━━━━━━━━━┳━━━━━━━┫
┃I                     ┃              ┃
┣━━━━━━━━━━━┫              ┃
┃                      ┃         I    ┃
┃!MPERATURETO.    I I  ┃CONTROLLER IJ ┃
┃;ROUND  THRESHOLD I   ┃              ┃
┗━━━━━━━━━━━┻━━━━━━━┛
VALVES AND FANS ARE
CONTROLLED IN OPEN
CIRCUIT CONFIGURATION
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━━┓
┃                                ┃                            ┃1.21.30     P 4       ┃
┃                                ┃                            ┣━━━━━┳━━━━━┫
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual1(121)