Air enters the turbocharger compressor of an automotive engine at 14.7 lbf/in2, 90 F, and exits at

Question:

Air enters the turbocharger compressor of an automotive engine at 14.7 lbf/in2, 90 F, and exits at 25 lbf/in 2, as shown. The air is cooled by 90 F in an intercooler before entering the engine. The isentropic efficiency of the compressor is 75%. Determine the temperature of the air entering the engine and the irreversibility of the compression-cooling process.