In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C,

Question

In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Options:

A . Less than 45°C

B . More than 45°C

C . Equal to 45°C

D . Initially decreases and remains constant thereafter

Answer: Option B

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