Question: Air plane working with Boot- Strab with evaporating cooling has 20 TR. If the exit air of evaporating cooling is 309 K and pressure

Air plane working with Boot- Strab with evaporating cooling has 20 TR.

Air plane working with Boot- Strab with evaporating cooling has 20 TR. If the exit air of evaporating cooling is 309 K and pressure 3.1 bar and it is expanded by cooling turbine to 1.01325 bar and cabin temperature maintained at 24C, if the isentropic efficiency of cooling is 3% and work don on main compressor 200 KJ/Kg find the refrigeration effect and mass flow rate and COP

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