# A piston-cylinder device initially contains 0.15 kg of air initially at 2 MPa and 350℃. The air first expanded isothermally to 600 kPa, then compressed polytropically with a polytropic exponent of 1.1 to the initial pressure, and finally compressed at the constant pressure to the initial state. Determine the boundary work for each processand the net work of the cycle.

Question
Asked Feb 15, 2019
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A piston-cylinder device initially contains 0.15 kg of air initially at 2 MPa and 350℃. The air first expanded isothermally to 600 kPa, then compressed polytropically with a polytropic exponent of 1.1 to the initial pressure, and finally compressed at the constant pressure to the initial state. Determine the boundary work for each process
and the net work of the cycle.