A piston-cylinder device contains 0.15kg of air initially at 2 MPa and 350oC. The air is first expanded isothermally to 500 kPa, then compressed polytropically with a polytropic exponent of 1.2 to the initial pressure, and finally compressed at the constant pressure to the initial state. a. Indicate knowns and unknows for each state as well as what type ofprocess is performed to get from one state to another. State anyassumptions b. Determine the boundary work for each processc. Determine the net work of the cycled. Draw the P-v diagram for each process

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A: P1=500 kPaV1=0.1 m3T1=150 KV2=0.3 m3T2=900 K

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A: for solution refer below images.

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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.