A shell and tube heat exchanger uses 600 tubes of 4 in B.W.G 20 (d, = 0.75 in and d; = 0.68 in) and 17.5 ft per pass. Hot water enters the tubes at 1.5E6 lbm/h and 180 F. The heat exchanger has one shell and two-tube pass per shell. Cold water enters the shell at 1.5E6 lbm/h and 70 F. The fouling factors happen to be equal for both tube and shell sides, fi = fo = 0.0003 h-ft²-F/Btu. Find the tube and shell outlet temperatures and the heat exchanger effectiveness. [Ans.: 130 F, 120 F, and 0.456].

A shell and tube heat exchanger uses 600 tubes of 4 in B.W.G 20 (d, = 0.75 in and d; = 0.68 in) and 17.5 ft per pass. Hot water enters the tubes at 1.5E6 lbm/h and 180 F. The heat exchanger has one shell and two-tube pass per shell. Cold water enters the shell at 1.5E6 lbm/h and 70 F. The fouling factors happen to be equal for both tube and shell sides, fi = fo = 0.0003 h-ft²-F/Btu. Find the tube and shell outlet temperatures and the heat exchanger effectiveness. [Ans.: 130 F, 120 F, and 0.456].

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 10.37P

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Concept explainers

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 shell and tube heat exchanger uses 600 tubes of 4 in B.W.G 20 (d, = 0.75 in
and d; = 0.68 in) and 17.5 ft per pass. Hot water enters the tubes at 1.5E6 lbm/h
and 180 F. The heat exchanger has one shell and two-tube pass per shell. Cold
water enters the shell at 1.5E6 lbm/h and 70 F. The fouling factors happen to be
equal for both tube and shell sides, f; = fo = 0.0003 h-ft-F/Btu. Find the tube and
shell outlet temperatures and the heat exchanger effectiveness. [Ans.: 130 F,
120 F, and 0.456].

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