A double-pipe heat exchanger is constructed of a copper (k = 380 W/m-°C) inner tube of internal diameter D₁ = 1.2 cm and external diameter Do 1.6 cm and an = outer tube of diameter 3.0 cm. The convection heat transfer coefficient is reported to be hi = 700 W/m²-°C on the inner surface of the tube and ho = 1400 W/m2-°C on its outer surface. For a fouling factor Rfi = 0.0005 m²-°C/W on the tube side and Rfo = 0.0002 m²-°C/W on the shell side, determine the overall heat transfer coefficient based on the outer surface area of the tube. _______W/m²-K
A double-pipe heat exchanger is constructed of a copper (k = 380 W/m-°C) inner tube of internal diameter D₁ = 1.2 cm and external diameter Do 1.6 cm and an = outer tube of diameter 3.0 cm. The convection heat transfer coefficient is reported to be hi = 700 W/m²-°C on the inner surface of the tube and ho = 1400 W/m2-°C on its outer surface. For a fouling factor Rfi = 0.0005 m²-°C/W on the tube side and Rfo = 0.0002 m²-°C/W on the shell side, determine the overall heat transfer coefficient based on the outer surface area of the tube. _______W/m²-K
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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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
A double-pipe heat exchanger is constructed of a copper (k = 380 W/m-°C) inner tube of internal diameter D₁ = 1.2 cm and external diameter Do 1.6 cm and an = outer tube of diameter 3.0 cm. The convection heat transfer coefficient is reported to be hi = 700 W/m²-°C on the inner surface of the tube and ho = 1400 W/m2-°C on its outer surface. For a fouling factor Rfi = 0.0005 m²-°C/W on the tube side and Rfo = 0.0002 m²-°C/W on the shell side, determine the overall heat transfer coefficient based on the outer surface area of the tube.
_______W/m²-K
Transcribed Image Text:double-pipe
constructed of a copper (k = 380 W/m-°C)
inner tube of internal diameter Di
A
heat
exchanger
is
= 1.2 cm
and external diameter Do
= 1.6 cm and an
outer tube of diameter 3.0
cm.
cm. The
convection heat transfer coefficient is
reported to be hi = 700 W/m2_°C on the
inner surface of the tube and ho
1400
W/m2-°C on its outer surface. For a fouling
factor Rf i =
0.0005 m2-°C/W on the tube
side and Rfo = 0.0002 m2-°C/W on the shell
side, determine the overall heat transfer
coefficient based on the outer surface area
of the tube.
W/m2-K
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