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Exercise? Turbochargers on automotive engines work as a sort of waste heat recovery system, as exhaust flow drives a turbine connected by a common shaft to a compressor. This compressor then increases the pressure of incoming ambient air, improving the power density of an engine with a given displacement volume. A manufacturer wants to turbocharge a spark-ignited engine and ultimately achieve a peak boost pressure of 60kPa (i.e. 160kPa absolute) at a particular engine operating point (flow rate through the engine of 0.035kg/s ). The incoming air to the non-adiabatic compressor is at standard conditions ( 100kPa,27FC ) and the exhaust enters the turbine at 450C and 140kPa and exits at 416C and 100kPa. For your analysis, you can assume the working fluid is pure air (gas use the following specific heat data for your calculations: a) Draw a schematic of a turbocharger indicating the relevant components and the energy transfers hat would be expected. b) Calculate the power delivered by the turbine to the compressor through the common shaff. Is this expansion process isentropic? Why or why not (justify with a relevant calculation)? c) Assuming the compression process follows a polytropic relationship with n=1.3, will the turbocharger be able to realize the boost pressure that the manufacturer specified? Justify your answer using your result from part b). d) Do you expect the selected turbomachinery would be sufficient if the compressor were isentropic? Why or why not (you can explain in words or with a simple diagram)