THERMOFLUID Consider a gas undergoing a thermodynamic cycle consisting of three processes from an initial state at P1 = 100 kPa , V1 = 0.81 m3 . Process 1 - 2 : constant pressure compression work of 65 kJ, Process 2 – 3 : constant volume heating of 2600 kJ, and Process 3 – 1 : isothermal expansion. a) Sketch the cycle on a clearly labelled P-V diagram and write appropriate First Law equations for all the three processes. Neglect the changes in kinetic energy and potential energy.   b) Determine the: i. volume at the end of constant pressure compression, ii. net work for the thermodynamic cycle, and iii. heat transfer during constant pressure compression.

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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.