Inspect And Operate An Air Cycle Cooling System Flashcards

1
Q

Where does the warm air come from that is used to heat the cabin of a large jet transport aircraft?

A

Warm engine compressor bleed air is used

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2
Q

Where is the first place the hot compressor bleed air gives up some of its heat in an air-cycle cooling system?

A

In the primary heat exchanger

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3
Q

What is the function of the air-cycle machine in an air-cycle cooling system?

A

The centrifugal compressor increases the pressure and temperature of the bleed air

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4
Q

Why must air-cycle air conditioning systems incorporate a water separator?

A

The rapid cooling of the air in the expansion turbine causes moisture to condense in the form of fog.

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5
Q

How is the temperature of the air produced by an air-cycle cooling system controlled?

A

By a temperature control valve which mixes hot engine compressor bleed air with cold air from the expansion turbine

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