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TRIM AIR VALVES (3)MIX MANIFOLD
COOL AIR TO GASPERS
RECIRCULATED AIR AIR FROM CABIN
RECIRCULATED FROM CABIN
AFT PRESSURE BULKHEAD
GF0210_036a
Flow Control
The mix manifold, mounted underfloor, receives fresh air from the packs and passenger cabin via the recirculation system. The quantity of air distributed to the various occupied compartments and the thermal requirement of each compartment are preset values. The split of flows to the three compartments is through suitably sized orifices at the exit ports of the mix manifold.
The distribution of airflow under steady state conditions is as follows:
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Cockpit . 22% of total flow
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FWD Cabin . 39% of total flow
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AFT Cabin . 39% of total flow
Rev 12, Aug 14, 2006 Flight Crew Operating Manual Volume 2
AIR CONDITIONING AND PRESSURIZATION
AIR DISTRIBUTION AND EXHAUST (CONT'D) Air Distribution and Flow Paths
OVERHEAD GASPER
CEILING OUTLET
OUTLET
DUCTS
LEGEND
Cockpit and cabin gaspers supply
Cockpit conditioned air supply
Forward cabin conditioned air supply
BULKHEAD
Aft cabin conditioned air supplyAFT OUTFLOW
Recirculation air duct VALVE
Gasper Supply
Conditioned air is also distributed via the gasper line. A gasper fan in the baggage compartment picks up the air in the cooler area of the mix manifold, and blows it through a duct. The duct runs the length of the cabin and into the cockpit, incorporating individual gasper outlets in the cabin and cockpit.
Volume 2 Flight Crew Operating Manual Rev 2A, Apr 11, 2005
In the cockpit, the following air outlets are provided:
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An upward facing outlet in each side console, not adjustable
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A forward facing outlet on each side at roof level, above the crew, not adjustable
.
One gasper outlet on each side of the instrument panel, adjustable for flow and direction
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One gasper outlet on each side of the overhead panel, adjustable for flow and direction
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One gasper outlet in the ceiling, adjustable for flow and direction.
GASPER GASPER
GASPER GASPER
VENT VENT VENT
COPILOT’S SIDE PILOT’S SIDE
FLIGHT COMPARTMENT BULKHEAD
FGF0210_004
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Two recirculation fans pull air from the cabin back to the mix manifold. The air is extracted from each side of forward and aft cabins through holes in the cabin side sills and is ducted under the floor to the recirculation filters. From the filters, the air enters the recirculation fans and is blown into the mix manifold to be mixed with incoming air from the packs.
The ACSC controls the fan speed. In normal operation, fan speed is at minimum but can be increased when the mix manifold temperature is too low or too high. In manual mode, no speed command is sent by the ACSC, but the fan will run at minimum speed.
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本文链接地址：庞巴迪环球5000公务机机组操作手册 Bombardier Global-空调和增压(11)
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