A 5 kg of water is placed in a piston-cylinder device at 0.3 MPa, 1.5706 k/kgK. Weights are placed on the piston to maintain a constant force on the water as it is heated to 200°C. Calculate the work done. il) State whether the work done by a system or the work done on a system and why.

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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.