Consider a closed piston cylinder that contains 0.2 kg of superheated water vapor at 200C and 100kPa. The cylinder is cooled and the piston moves is such a way that the pressure remains constant. At the end of the cooling process the water in the cylinder is a compressed liquid at 20C and 100kPa. Calculate the initial volume of the cylinder. Calculate the final volume of the cylinder. Calculate the work done on the system during the cooling process. How much heat was trasferred from the system to the surrounding area during the cooling 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.