For a Counter Current Heat Exchanger with Ti H =

question 62

Multiple Choice

For a counter current heat exchanger with Ti h = 80°C, T°c = 60°C, T°h = 50°C and Ti c = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy

• A)d ² T/dZ² > 0
• B)d ² T/dZ² = 0
• C)d ² T/dZ² < 0
• D)dT/dZ = 0

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