A vertical piston–cylinder device initially contains 0.25 m3 of air at 300 0C by placing 600 kg on the piston (Patm = 100 kPa). The piston has a mass of 5 kg and a diameter of 12 cm. A valve connected to the cylinder is now opened, and air is allowed to escape until three-quarters of the mass leave the cylinder at which point the final temperature in the cylinder is 182 0C. Determine the boundary work during this process.

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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.