The inner and outer surface temperature of a glass window 10 mm thick are 25 and 5 degree-C, respectively. What is the heat loss through a 1

Question

The inner and outer surface temperature of a glass window 10 mm thick are 25 and 5 degree-C, respectively. What is the heat loss through a 1 m x 3 m window

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Phúc Điền 5 years 2021-08-15T21:47:01+00:00 1 Answers 82 views 0

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  1. diemkieu
    0
    2021-08-15T21:48:34+00:00
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    Answer:

    The  heat loss is  H = 8400\ W

    Explanation:

    From the question we are told that

       The thickness is  t = 10 \ mm = 0.01 \ m

        The inner temperature is  T_i = 25 ^oC

        The outer temperature is T_o = 5 ^oC

        The length of the window is  L  = 1 m  

        The  width of the window is  w  =  3 m  

    Generally the heat loss is mathematically represented as

          H = \frac{k * A * \Delta T}{t}

    Where  k is the thermal conductivity of glass with value k = 1.4\ W/m \cdot K

       and A  is the area of the window with value

               A = 1 * 3

                A = 3 \ m^2

    substituting values

           H = \frac{1.4 * 3 * (23-5)}{0.01}

           H = 8400\ W

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