8.21 WP In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75°C as it moves at o.2 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? If fluid enters the tube with a fully developed velocity profile and a uniform temperature profile, what is the surface temperature at the tube exit and at a distance of o.5 m from the entrance? Fluid properties may be approximated as p = 1000 kg/m3, c, = 4000 J/kg · K, µ = 2 × 103 kg/s · m, k = o.8 W/m · K, and Pr = 10.
8.21 WP In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75°C as it moves at o.2 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? If fluid enters the tube with a fully developed velocity profile and a uniform temperature profile, what is the surface temperature at the tube exit and at a distance of o.5 m from the entrance? Fluid properties may be approximated as p = 1000 kg/m3, c, = 4000 J/kg · K, µ = 2 × 103 kg/s · m, k = o.8 W/m · K, and Pr = 10.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:8.21 WP In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75°C as it moves at o.2 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? If fluid enters the tube with a fully developed velocity profile and a uniform
temperature profile, what is the surface temperature at the tube exit and at a distance of o.5 m from the entrance? Fluid properties may be
approximated as p = 1000 kg/m³, c, = 4000 J/kg · K, µ = 2 × 10-3 kg/s · m, k = 0.8 W/m · K, and Pr = 10.
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