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Discussion :: Heat and Mass Transfer

  1. Unit of thermal diffusivity is

    2. A.

     m²/hr
    B.

     m²/hr °C
    C.

     kcal/m² hr
    D.

     kcal/m. hr °C

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    Answer : Option A

    Explanation :

    Thermal diffusivity. In heat transfer analysis, thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. It measures the rate of transfer of heat of a material from the hot end to the cold end. It has the SI derived unit of m²/hr

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