Answered: 10-mm-inner-diameter pipe made of…

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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A 10-mm-inner-diameter pipe made of commercial steel is used to heat a liquid in an industrial process. The liquid enters the pipe with T_i=25°C, V=0.8 m/s. A uniform heat flux is maintained by an electric resistance heater wrapped arounf the outer surface of the pipe, so that the fluid exits at 75°C. Assuming fully developed flow and taking the average fluid properties to be ρ=1000 kg/m3, c_p=4000 J/kg·K, µ=2x10^-3 kg/m·s, k=0.48 W/m·K, and Pr=10, determine:

The required surface heat flux , produced by the heater
The surface temperature at the exit, T_s
The pressure loss through the piper and the minimum power required to overcome the resistance to flow.

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The pressure loss through the pipe and the minimum power required to overcome the resistance to flow.

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