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Discussion :: Heat and Mass Transfer

  1. In counter current flow heat exchanger, the logarithmic temperature difference between the fluids is ________ as compared to parallel flow heat exchanger.

    2. A.

     Same
    B.

     Less
    C.

     Greater
    D.

     None of these

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    Answer : Option C

    Explanation :

    The exchanger is performing at its best when the outlet temperatures are equal. Counter flow heat exchangers are inherently more efficient than parallel flow heat exchangers because they create a more uniform temperature difference between the fluids, over the entire length of the fluid path.

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