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In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75°C as it moves at 0.22 m/s through a straight thin-walled stainless steel tube of 12.7-mm diameter. A uniform heat flux is maintained by an electric resistance heater wrapped around the outer surface of the tube. If the tube is 10 m long, what is the required heat flux? Iffluid enters the tube with a fully developed velocity profile and a uniform temperature profile, what is the surface temperature at the tube exit? Fluid properties may be approximated as p = 1000 kg/m3, cp 4000 J/kg.K, j = 2 x 10-3kg/s.m, k 0.8 W/m.K, and Pr = 10. = = = = Determine the required heat flux, W/m2. 95 i W/m2 Determine the surface temperature at the tube exit, in °C. T.5.0 = °C