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Discussion :: Heat and Mass Transfer

  1. The critical thickness of insulation for a sphere is

    2. A.

     k/h₀
    B.

     2k/h₀
    C.

     h₀/k
    D.

     h₀/2k

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    Answer : Option B

    Explanation :

    Critical thickness of insulation means maximum heat loss with min thermal resistance. This concept is useful in the situation when surface area of the base object increases with the insulation
    The critical thickness of insulation for a sphere is 2k/h₀

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