A cycle composed of three processes, 1-2 : constant volume.2-3 expansion with PV = constant and 3-1: constant pressure, occurs in a piston cylinder assembly. V1=0.028 m^3. U2-U1= 26.4 kJ. P1= 1.4 bar. U2=U3. Work of process 3-1 is equal to -10.5 kJ. Determine the relative increase in the value of Qcycle if the process 2-3 is replaced by a polytropic process ( PV^n = Constant ) with n=1.5. please answer asap a. 83 % b. 79 % c. 88 % d. 93 % e. 65 %

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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.