A boot-strap air refrigeration system of 20 TR capacity is used for an aeroplane flying at an of 2000 m. The ambient air pressure and temperature are 0.8 bar and O°C. The ram air pressure and temperature are 1.05 bar and 17°C. The pressure of air after isentropic compression in the main compressor is 4 bar. This air is now cooled to 27C in another auxiliary heat exchanger and then expanded isentropically upto the cabin pressure of 1.01 bar. If the air leaves the cabin at 25°C and the efficiencies for the main compressor, auxiliary compressor and the cooling turbine are 80%; 75% and 80% respectively; find :1. Power required to operate the system ; and 2. C.O.P. of the system.
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A boot-strap air refrigeration system of 20 TR capacity is used for an aeroplane flying at an of 2000 m. The ambient air pressure and temperature are 0.8 bar and O°C. The ram air pressure and temperature are 1.05 bar and 17°C. The pressure of air after isentropic compression in the main compressor is 4 bar. This air is now cooled to 27C in another auxiliary heat exchanger and then expanded isentropically upto the cabin pressure of 1.01 bar. If the air leaves the cabin at 25°C and the efficiencies for the main compressor, auxiliary compressor and the cooling turbine are 80%; 75% and 80% respectively; find :1. Power required to operate the system ; and 2. C.O.P. of the system.
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excellent explain sir
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Easily understandable
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in one to two process , how temperature is incresing as this process is isenthalpic process?
Bro in 1-2 process its isentropic not isenthalpic
Thanks sir ..
Sir, main compressor process T2' se start horha h to T2 Kyu Lia h
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which book we can refer sir for rac
S Chand