A closed thermodynamic system undergoes a cycle comprising four processes 1- 4. The following amount of heat is transferred through the system boundaries: Process 1: 50 kJ heat added to the system Process 2: 80 kJ heat removed from the system Process 3: 100 kJ heat added to the system Process 4: 40 kJ heat removed from the system What is the net work done in this cyclic process?

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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.