Question: Air is compressed adiabatically in a piston cylinder assembly from 1 bar, 3 F 0 K to 1 0 bar, 6 F 0 K .

Air is compressed adiabatically in a piston

cylinder assembly from

1

bar,

3

0

K to

10

bar,

6

0

.

The air can be modeled as ideal gas and kinetic and potential energy effects are negligible. Determine the amount of entropy produced, in kJ

/

K per kg of air, for the compression. What is the minimum theoretical work input, in kJ per kg of air, for an adiabatic compression from the given initial state to a final pressure of

10

bar?

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