determine the tube length required to heat the oil
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:Oil at 10°C is to be heated by saturated steam at 1 atm
in a double-pipe heat exchanger to a temperature of 30°C. The
inner and outer diameters of the annular space are 3 cm and
5 cm, respectively, and oil enters at with a mean velocity of 0.8
m/s. The inner tube may be assumed to be isothermal at 100°C,
and the outer tube is well insulated. Assuming fully developed
flow for oil, determine the tube length required to heat the oil
to the indicated temperature. In reality, will you need a shorter
or longer tube? Explain.
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