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Discussion :: Refrigeration and Air Conditioning

  1. Nusselt number (NN) is given by

    2. A.

     NN = hl/k
    B.

     NN = μ cp/k
    C.

     NN = ρ V l /μ
    D.

     NN = V²/t.cp

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    Answer : Option A

    Explanation :

    Nusselt number (Nu) is the ratio of convective to conductive heat transfer at a boundary in a fluid.

    A Nusselt number of value one represents heat transfer by pure conduction.

    Nusselt number (NN) is given by NN = hl/k

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