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
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter10: Heat Exchangers
Section: Chapter Questions
Problem 10.28P
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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
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