Air enters a compressor at T1=300 K and P1=100 kPa, then compressed to 1500 kPa. The isentropic efficiency of the compressor is 85% and heat transfer to the surrounding during the process is negligible. Find the reversible work in kJ/kg. (Assume constant specific heats at room temperature, cp=1.005 kJ/kg.K, cy=0.718 kJ/kg.K, R= 0.287 kJ/kg.K, k=1.4, To=300 K, Po=100 kPa)

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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.