The combustion of 1.00 mole of octane, C8H18, yields 8 moles of CO2, 9.00 moles of H2O, and 47.0 moles of N2. The exhaust gases at 811 K, 0.172 MPa from a spark ignition engine are to be expanded through a turbocharger used to compress the incoming air charge to the engine.
The incoming air is at 20.0°C and atmospheric pressure, and the turbocharger turbine exhausts to the atmosphere (Figure below).
Find the compressor's isentropic outlet temperature T2 and its isentropic power input per unit mass flow rate (WC/m)s.
