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off.
Hot
Bleed Air
HOT
AIR
Mixing Unit
Pack
1
Pack
2
MENU
AIR CONDITIONING System Presentation 26/40
The Hot Bleed Air is supplied to the Hot Air Valve from
just downstream of the Pack Flow Valves. This means
that if the Pack Flow Valves are closed there is no air
supplied to the Trim system. The Hot Air Valve and the
Trim Air Valves will automatically close.
HOT
AIR
Mixing Unit
Pack
1
Pack
2
MENU
AIR CONDITIONING System Presentation 27/40
HOT
AIR
Mixing Unit
Pack
1
Pack
2
Zone Control
Computer
The Trim Air Valves and the Hot Air Valve are controlled
by the Zone Control Computer.
MENU
AIR CONDITIONING System Presentation 28/40
Zone Duct
Temperature
Zone Duct
Temperature
HOT
AIR
Mixing Unit
Pack
1
Pack
2
22 0 25 0 29 0
Zone Duct Temperature, which is the temperature of the
air entering a zone,
MENU
AIR CONDITIONING System Presentation 29/40
Zone
Temperature
Zone
Temperature
and the actual zone temperature are monitored by the
Zone Control Computer and presented on ECAM.
18 0 220 250
HOT
AIR
22 0 25 0 29 0
MENU
AIR CONDITIONING System Presentation 30/40
ECAM Air Conditioning Page
The ECAM COND Page contains zone temperature and
trim air system indications.
MENU
AIR CONDITIONING System Presentation 31/40
ECAM CRUISE Page
The ECAM CRUISE Page also contains zone temperature
indications.
[][][][][][] [][]
MENU
AIR CONDITIONING System Presentation 32/40
On the overhead panel there is an AIR COND Panel which
allows pilot control of the air conditioning system.
Let’s look at the controls on this panel in a little more
detail.
MENU
AIR CONDITIONING System Presentation 33/40
The PACK FLOW Switches control their associated pack
flow control valves.
OFF
[][][][][][] [][]
MENU
AIR CONDITIONING System Presentation 34/40
[][][][][][] [][] []
OFF
In the example shown Pack 1 is selected off and is
indicating closed, while Pack 2 is selected on and is
indicating open.
MENU
AIR CONDITIONING System Presentation 35/40
The PACK FLOW Selector permits selection of desired
pack flow.
We will look at the use of this selector in more detail
during the Normal Operation module.
MENU
AIR CONDITIONING System Presentation 36/40
[][][][][][] [][] []
The guarded RAM AIR Switch controls the RAM AIR valve.
In the example shown the RAM AIR valve is indicating
closed.
Use of the RAM AIR switch is restricted to abnormal
conditions that will be discussed later.
MENU
AIR CONDITIONING System Presentation 37/40
The HOT AIR Switch is associated with the Hot Air Valve.
There is a Hot Air valve indication on the ECAM COND
Page.
In the example shown the valve is indicating open.
Now let’s look at temperature control.
HHoottAAirirVVaalvlvee
MENU
AIR CONDITIONING System Presentation 38/40
ZZoonneeTTeemmppeerraattuurreeSSeeleleccttoorrss
The Zone Temperature Selectors are used to adjust the
required temperature for an associated zone.
MENU
AIR CONDITIONING System Presentation 39/40
HOT
AIR
Mixing Unit
Pack
1
Pack
2
Cabin
Fan
Cabin
Fan
Cabin
Fan
Cabin
Fan
Two cabin fans are fitted to reduce the bleed air
requirement, and therefore save fuel. These fans
establish a recirculation flow of air from the three aircraft
zones to the mixing unit. In Normal operation there are
no ECAM indications associated with the cabin fans.
MENU
AIR CONDITIONING System Presentation 40/40
On the Overhead Panel there is a CAB FANS sw on the
VENTILATION Panel to control the Cabin Fans. The CAB
FANS sw can be used to switch the fans off in response to
ECAM procedure.
MENU NEXT
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AIR CONDITIONING MENU System Presentation 41/40
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EXIT
AUDIO GLOSSARY FCOM
RETURN
AAIIRRCCOONNDDIITTIIOONNIINNGGPPAACCKKSS
RRAAMMAAIIRRVVAALLVVEE
EECCAAMMPPAACCKKIINNDDIICCAATTIIOONNSS
TTEEMMPPEERRAATTUURREERREEGGUULLAATTIIOONN
EECCAAMMCCOONNDDIITTIIOONNIINNGGPPAAGGEE
CCAABBIINNFFAANNSS
AIR CONDITIONING MENU Cargo System Pres. 1/17
AIR CONDITIONING Cargo System Pres. 2/17
The conditioning of the air in the two cargo compartments
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空客a320飞机概述1(15)
