In the final stages of production, a pharmaceutical
Chapter 8, Problem 8.27(choose chapter or problem)
In the final stages of production, a pharmaceutical issterilized by heating it from 25 to 75C as it moves at0.2 m/s through a straight thin-walled stainless steeltube of 12.7-mm diameter. A uniform heat flux is main-tained by an electric resistance heater wrapped aroundthe outer surface of the tube. If the tube is 10 m long,what is the required heat flux? If fluid enters the tubewith a fully developed velocity profile and a uniformtemperature profile, what is the surface temperatureat the tube exit and at a distance of 0.5 m from theentrance? Fluid properties may be approximated as ??1000 kg/m3, cp?4000 J/kg?K, m2?? 0?3kg/s?m,? .8 W/m?K, and Pr?10
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