Air is contained in a piston/cylinder device at an initial state where the volume is 1.7 m3, temperature is 250 K, and pressure is 454 kPa. In a portion of an engine cycle, air goes through the following two sequential processes: Process 1-2: It is heated while the system is allowed to expand at constant pressure, until the volume increases by 55%. Process 2-3: It is heated further to maintain a constant temperature while the volume increases by 55% again. To simplify this problem, you can treat air as an ideal gas with constant specific heats. a.) On your paper, draw these processes on a P-V diagram. Label states 1, 2, and 3. b.) During these two combined processes, how much heat is transferred to the air, in k

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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.