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(Solved): Fluid in an industrial application flows within a thin-walled tube having a circular cross section a ...



Fluid in an industrial application flows within a thin-walled tube having a circular cross section and diameter of 2.5 cm . Fluid enters the tube at

70\deg C

at a mass flow rate of 0.05

k(g)/(sec)

. Along the length of the tube, external ambient air creates an average heat transfer coefficient of

20(W)/(m^(2))-K

at

T_(\infty )=25\deg C

. If the tube is 25 m in length, calculate the outlet temperature of the fluid. State assumptions. [Fluid Properties:

\rho =963k(g)/(m^(3)),c_(p)=4209(J)/(k)g-K,\mu =306\times 10^(-6)N.(s)/(m^(2)),Pr=2.7,k=0.66(W)/(m)-K

] *Hint: Calculate the overall heat transfer coefficient, U.

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