2.Find the minimum work done per Kg of air in a cycle according to the following processes: a. Isothermal expansion from state 1 to state 2. b. Constant volume compression from state 2 to state 3. c. Constant pressure compression from state 3 to the initial state. Data: P1= 350 KPa V1 = 1 m3 /Kg T3 = 16500 C d. Represent the work on a p-V diagram.

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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.