In the final stages of production, a pharmaceutical is sterilized by heating it from 30°C to 75°C as it moves at 0.2 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? Fluid properties may be approximated as ? = 1000 kg/m3 , cp = 4000 J/kg K, ? = 2 x 10-3 kg/s m, k = 0.8 W/m K, and Pr = 10.
In the final stages of production, a pharmaceutical is sterilized by heating it from 30°C to 75°C as it moves at 0.2 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? Fluid properties may be approximated as ? = 1000 kg/m3 , cp = 4000 J/kg K, ? = 2 x 10-3 kg/s m, k = 0.8 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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Question
In the final stages of production, a pharmaceutical
is sterilized by heating it from 30°C to 75°C as it moves at
0.2 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? Fluid properties may be approximated as ? = 1000 kg/m3
, cp =
4000 J/kg K, ? = 2 x 10-3 kg/s m, k = 0.8 W/m K, and Pr = 10.
Transcribed Image Text:-L-10m
0.2m/s
I Tmi25°C
Tmo-75°C
D-12.7w
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