Figure shows a heat exchanger designed to cool 5250 kg/h of an ethyl alcohol solution (Cp = 3810 J/kg. °C) from 66 °C to 39 °C. Water (Cp = 4200 J/kg. °C) at 10 °C is %3D %D pumped at 4750 kg/h to cool the solution. The tube side fluid flows in a circular pipe with an outside diameter of 25 mm. The overall heat transfer coefficient is (6.84x10^2) W/(m2.°C ). Find the tube length 'L' for one pass of a two-pass parallel flow double-pipe heat exchanger as shown in Figure.
Figure shows a heat exchanger designed to cool 5250 kg/h of an ethyl alcohol solution (Cp = 3810 J/kg. °C) from 66 °C to 39 °C. Water (Cp = 4200 J/kg. °C) at 10 °C is %3D %D pumped at 4750 kg/h to cool the solution. The tube side fluid flows in a circular pipe with an outside diameter of 25 mm. The overall heat transfer coefficient is (6.84x10^2) W/(m2.°C ). Find the tube length 'L' for one pass of a two-pass parallel flow double-pipe heat exchanger as shown in Figure.
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.
Chapter9: Heat Transfer With Phase Change
Section: Chapter Questions
Problem 9.31P
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Question
Transcribed Image Text:Figure shows a heat exchanger
designed to cool 5250 kg/h of an
ethyl alcohol solution (Cp = 3810
J/kg. °C) from 66 °C to 39 °C.Water
(Cp = 4200 J/kg. °C) at 10 °C is
pumped at 4750 kg/h to cool the
solution. The tube side fluid flows in a
circular pipe with an outside diameter
of 25 mm. The overall heat transfer
coefficient is (6.84x10^2) W/(m².°C).
Find the tube length 'L' for one pass of
a two-pass parallel flow double-pipe
heat exchanger as shown in Figure.
Answer should be in m with three
significant figures.
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