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Scaling of enhanced heat exchanger tubes
Author(s) -
Watkinson A. P.,
Louis L.,
Brent R.
Publication year - 1974
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450520503
Subject(s) - heat exchanger , scaling , materials science , heat transfer coefficient , tube (container) , fouling , fin , heat transfer , mechanics , plate fin heat exchanger , micro heat exchanger , heat transfer enhancement , composite material , thermodynamics , plate heat exchanger , geometry , chemistry , physics , mathematics , biochemistry , membrane
The performance of inner‐fin and spirally indented heat exchanger tubes is compared with plain smooth tubes under severe scaling conditions. Artificially hardened water was recirculated through a heat exchanger which contained an enhanced tube and a plain tube in parallel and the decrease in heat transfer coefficient due to scale deposition followed with time. Inner‐fin and spirally indented tubes maintained advantages in heat transfer coefficient over plain tubes of 10 to 100% after scaling. Asymptotic fouling resistances were larger for the inner fin tubes than for plain tubes, and smaller for the spirally indented tubes at velocities above 3 ft/sec.