What are the irreversibility and the second-law efficiency

Reference no: EM131233641

1. A heat engine receives 1 kW heat transfer at 1000 K and gives out 400 W as work, with the rest as heat transfer to the ambient. Find its first and second-law efficiencies.

2. A heat exchanger increases the exergy of 3 kg/s water by 1650 kJ/kg using 10 kg/s air coming in at 1400 K and leaving with 600 kJ /kg less exergy. What are the irreversibility and the second-law efficiency?

Reference no: EM131233641

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