Heat Exc A shell-and-tube heat exchanger (one shell pass, multiple tube passes) is to be used tocool engine oil of 100 kg/s entering the shell side at 370 K and leaving at 338 K. Thecorresponding convection coefficient on the tube surface and the LMTD correctionfactor of the heat exchanger are known to be h,=10867 W/m?K and F=0.99,respectively. The condenser will be supplied with cooling water that enters the tubes at280 K and is to exit the tubes at 320K. Thin walled tubes of 30 mm diameter arespecified and the mean velocity of water flow through the tubes is to be maintained at1.42 m/s.Find:1. i) How many tubes must be used?2. ii) If the length of the heat exchanger is not to exceed 1.5 m, how many tube passesshould be made?(for water =1000 kg/m³, c,=4000 J/kgK, µ=959x106 Ns/m², k=0.606 W/mK, Pr=6.62and for engine oil c,=2000 J/kgK)

here, use energy balace for 1). and 2).both.for solution refer below images.

Answered: 1. i) How many tubes must be used? 2.…

1. i) How many tubes must be used? 2. ii) If the length of the heat exchanger is not to exceed 1.5 m, how many tube passes should be made?

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 10.45P

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