An insulated parallel-flow heat exchanger is used to transfer heat from steam to air. The steam enters at 500 kPa and 300°C, and exits at 500 kPa and 160°C. The mass flow rate of the steam is 2 kg/s. The air enters at 100 kPa and 40°C, and exits at 100 kPa and 200°C. Determine the required mass flow rate of the air, and the entropy generation rate of the heat exchanger. Is this arrangement for a parallel-flow heat exchanger?
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