A cylinder/piston contains air at 100 kPa and 20 C with a V=0.3 m^3. The air is compressed to 800 kPa in a reversible polytropic process with n = 1.2, after which it is expanded back to 100 kPa in a reversible adiabatic process. Find the net work.

A cylinder/piston contains air at 100 kPa and 20 C with a V=0.3 m^3. T

1.	A cylinder/piston contains air at 100 kPa and 20 C with a V=0.3 m^3. The air is compressed to 800 kPa in a reversible polytropic process with n = 1.2, after which it is expanded back to 100 kPa in a reversible adiabatic process. Find the net work.
A.	-174.6 kJ/kg
B.	-154.6 kJ/kg
C.	-124.6 kJ/kg
D.	-194.6 kJ/kg
Answer» B. -154.6 kJ/kg

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A cylinder/piston contains air at 100 kPa and 20 C with a V=0.3 m^3. The air is compressed to 800 kPa in a reversible polytropic process with n = 1.2, after which it is expanded back to 100 kPa in a reversible adiabatic process. Find the net work.

A cylinder/piston contains air at 100 kPa and 20 C with a V=0.3 m^3. The air is compressed to 800 kPa in a reversible polytropic process with n = 1.2, after which it is expanded back to 100 kPa in a reversible adiabatic process. Find the net work.

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