Propane is contained in a closed, rigid container with a volume of 10 m^3.  Initially the pressure and temperture of the propane are 8 bar and 80 ^0C, respectively.  The temperture drops as a result of energy rejected by heat transfer to the surroundings.  Determine the temperture at which condensation first occurs, in ^0C, and the fraction of the total mass that has condensed when the pressure reaches 5 bar.  What is the volume, in m^3, occupied by saturated liquid at the final state?

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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.