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A refrigerator is placed near a partition wall of a room such that there is only a 4cm gap between the wall and the refrigerator surface facing the wall. The refrigerator surface is of 1.6m height and 0.8 m breadth and has a temperature of 22oC. The wall temperature is 30oC. Calculate the rate of heat gain by the refrigerator surface.

         Assume the properties of air at 26oC:

         v = 1.684×10-5 m2/s , k = 0.26 W/mK,

         a = 2.21×10-5 m2/s, Pr = 0.7

       Use the equation,

commented by (230 points)
nice questions
commented by (230 points)
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thank tou jjjj

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