Engineering, 05.12.2021 17:20 saniyawilliams1207
Heat is being transferred from water to air through a brass wall having thermal conductivity of 75 W/mK. The size of brass wall is 0.5 m x 0.5 m. The mean temperature of wall and air are 90C and 30C, respectively. It is desired to increase the heat transfer rate by adding rectangular brass fins 1 mm thick, 25 mm in length and pitched 10 mm apart (center to center). Convective heat transfer coefficient between the wall and the air is 15 W/m2 K.
a. Calculate the increase in the heat transfer from the wall as a result of adding fins.
neglect heat loss from the tip.
b. Determine the overall effectiveness of the fins.
Answers: 3
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Heat is being transferred from water to air through a brass wall having thermal conductivity of 75 W...
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