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In: Mechanical Engineering

Which one of the following statements are correct? In a counter-flow heat exchanger, the exit temperature...

Which one of the following statements are correct?

In a counter-flow heat exchanger, the exit temperature of the cold fluid can never reach the exit temperature of the hot fluid.

In a parallel flow heat exchanger the exit temperature of the cold fluid is always greater than the exit temperature of the hot fluid.

In a counter flow heat exchanger the exit temperature of the cold fluid is always greater than the exit temperature of the hot fluid.

In a parallel flow heat exchanger the exit temperature of the cold fluid can never reach the exit temperature of the hot fluid.

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