Jet aircrafts fly at altitudes above 30,000 ft where the air is very cold at `- 40^(@)C` and the
Channel: Doubtnut
Date: 2020-08-30

Jet aircrafts fly at altitudes above 30,000 ft where the air is very cold at `- 40^(@)C` and the pressure is 0.28 atm. The cabin is maintained at 1 atm pressure by means of a compressor which exchanges air from outside adiabatically. In order to have a comfortable cabin temperature of `25^(@)C`, we will require in addition