This question requires the use of the extracts from the tables of thermodynamic properties supplied. Dry saturated steam at a temperature of 25oC is cooled isentropically such that its temperature falls to 15oC.  What is the dryness fraction after the cooling process?   a. 0.97 b. 0.93 c. 0.81 d. 0.85  e. 0.77

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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.