Water substance is contained in a piston-cylinder device initially at 1.0 MPa and 0.2678 m3/kg. It is compressed at constant pressure until it becomes a saturated vapor. (a) Find the initial and final temperatures, in degrees Celsius. (b) Find the work input required, in kJ/kg. (c) If the original volume is 1 litre, determine the internal energy change of the fluid, in kilojoules

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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.