The closed boiler of volume 0.5m3 contains water-vapor mixture with a quality of 0.75 at the initial pressure of p1=1.1bar. After heating, the pressure increases to 2.0 bar. a.Draw the T-v diagram showing all states. Show by arrow the process. b.Calculate the mass in kg of the total mixture and the mass of the liquid that was presented initially inside the container. c.What are initial and final temperatures of the mixture in C? d.What change in internal energy water-vapor mixture undergoes from stage 1 to stage 2? e.Using the energy balance equation answer how much heat was added to the container.

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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.