What is the second-law efficiency of the compressor process

Reference no: EM131233617

1. Air flows into a heat engine at ambient conditions of 100 kPa, 300 K, as shown in Fig. P8.111. Energy is supplied as 1200 kJ per kilogram of air from a 1500 K source, and in some part of the process a heat transfer loss of 300 kJ/kg air occurs at 750 K. The air leaves the engine at 100 kPa, 800 K. Find the first- and second-law efficiencies.

2. Air enters a compressor at ambient conditions of 100 kPa, 300 K and exits at 800 kPa. If the isentropic compressor efficiency is 85%, what is the second-law efficiency of the compressor process?

Reference no: EM131233617

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