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Engineering, 05.03.2020 12:26 10027126

Flue passing hot exhaust gases has a square cross section, 400 mm to a side. The walls are constructed of refractory brick 200 mm thick with a thermal conductivity of 1.5 W/mK. Calculate the rate of heat loss from the flue per unit length when the interior and exterior surfaces are maintained at 350 and 25oC, respectively. Use a grid spacing of 100 mm

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