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.

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.