engineering recuitment UPPSC AE Mock Test 2024 Heat Transfer Heat Exchanger Heat Exchanger Analysis

The effectiveness of a counter-flow heat exchanger has been estimated as 0.25. Hot gases enter at 200°C and leave at 75°C. Cooling air enters at 40°C. The temperature of the air leaving the unit will be:

1

60°C

2

70°C

3

80°C

4

90°C

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