Questions tagged [air-conditioning]
31 questions
8
votes
1 answer
Why do airplanes have complex air conditioning systems?
I'm wondering why do planes have complex air conditioning systems with several coolers, compressors and turbines. If these devices are powered by bleed air from the engines, why isn't the bleed air simply cooled and depressurized with valves? Is it…
Oskari Räsänen
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2
votes
2 answers
HEPA filters, airliner HVAC and COVID 19
There is this report that says the risk of aerosol spreading on a commercial liner is low due to HEPA filters.
But it is not considering the cases when A/C is OFF. This seems to be quite common when the plane is on the tarmac but away from the…
Andrew Walsh
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0
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0 answers
How does air passing through the secondary heat exchanger in an aircraft's AC pack get cooled if ram air is not available/insufficient?
For example, if the aircraft is on ground and bleed air for the AC pack is provided by the APU.
Most explanations I've seen say that the air passing through the secondary heat exchanger in between the ACM's compressor and turbine stages is cooled by…
aokfreak
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-1
votes
1 answer
what will happens if there is a leak in air conditioning system?
In different system such as "Air cycle" and "vapor cycle" air conditioning system.
