Q6: n moles of CH4, considered as an ideal gas, are taken through the following thermodynamic cycle: A→B: isovolumetric transformation from pressure PA and volume VA to pressure PB=2 PA B→C: isobaric expansion from volume VA to volume VC=3 VA C→D: isovolumetric transformation down to pressure PD=PA D→A: isobaric compression  a. Sketch the (ABCD) cycle on a P-V diagram and determine all the unknown pressures, volumes and temperatures at points A, B, C and D in terms of n, R, PA and VA. b. Determine the net mechanical work done by the gas over the entire cycle. c. Determine the heat absorbed by the gas over each leg of the cycle.

Q: 11.-What is the work of the isobaric process (from point C to point D)?

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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.