Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Low weight per tonne of refrigeration
Higher coefficient of performance
High heat transfer rate
Low temperature at high altitudes

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Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Perfectly tight vapour seal should be used
Smaller cabinet should be used
Refrigerant with lower evaporation temperature should be used
Bigger cabinet should be used

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