A closed, rigid tank is filled with only saturated vapor (water), initially at 20 bar, is cooled until the pressure is 3 bar. Show the process of the water on a sketch of the T-v diagram and evaluate the heat transfer, in kJ/kg a. Locate the states on the T-v coordinate and process. b.Write your energy balance equation to evaluate the heat transfer c. Determine the specific internal energy at state 1 (u1 )in kJ/kg d. Determine the quality x at state 2  e. Determine the specific internal energy at state 2 (u2) in kJ/kg f. Determine the energy transfer by heat/mass during the process (kJ/kg)

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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.