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Discussion :: Refrigeration and Air Conditioning

  1. An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by

    2. A.

     (e₁ + e₂)/ e₁ + e₂ - e₁e₂
    B.

     1/e₁ + 1/e₂
    C.

     e₁ + e₂
    D.

     e₁e₂

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    Answer : Option A

    Explanation :

    An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by (e₁ + e₂)/ e₁ + e₂ - e₁e₂

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