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Module 11. Aeroplane aerodynamics, structures and systems

In typical vapour cycle system, the sub-cooler

  • cools the vapour further to prevent slugging.
  • is a heat exchanger to superheat the vapour.
  • delivers extra cooling effect when the aircraft is on ground.

Explanation

In a vapour-cycle system the sub-cooler lowers the refrigerant temperature further after the condenser, ensuring it remains fully condensed liquid with no flash bubbles before the expansion valve, which prevents slugging in the cycle. It is not a superheater, and its purpose is consistent cooling performance rather than extra ground cooling.

soonhchong asking:

option 1 is the most correct answer?!

http://navyaviation.tpub.com/14020/css/14020_106.htm

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