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Calculation of the overall heat transfer coefficient in a radial system with fouling factors

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Calculate the overall heat transfer of a brass tube with fouling on the inside and outside of the tube surface.
Determine the overall heat transfer coefficient, Uo, based on the outer surface of a brass tube with Di = 2.5cm and Do = 3.34cm [k = 110 W mK ] for the following conditions: The inside and outside convective heat transfer co-efficients
are, respectively, hi = 1200 W m 2 K and ho = 2000 W m 2 K , and the fouling factors for the inside and outside surfaces are Fi = Fo = 0.00018 m 2 K W .

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