Modeling cooling tower fouling in helical-rib tubes based on Von-Karman analogy

This paper provides an analysis on cooling tower fouling data taken in seven 15.54 mm I.D. helically ribbed, copper tubes at R e = 16,000. The geometric parameters include number of rib starts, helix angle, and height. A series of semi-theoretical fouling correlations as a function of the product of...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2010-06, Vol.53 (13), p.2715-2721
Main Authors: Li, Wei, Li, Guanqiu
Format: Article
Language:English
Subjects:
Analogies
Applied sciences
Computational efficiency
Cooling tower fouling
Cooling towers
Devices using thermal energy
Energy
Energy. Thermal use of fuels
Enhanced tubes
Exact sciences and technology
Fouling
Heat exchangers (included heat transformers, condensers, cooling towers)
Mass transfer
Mass transfer coefficient
Mathematical models
Pressure drop
Secondary flow
Tubes
Turbulent flow
Von-Karman analogy
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Summary:This paper provides an analysis on cooling tower fouling data taken in seven 15.54 mm I.D. helically ribbed, copper tubes at R e = 16,000. The geometric parameters include number of rib starts, helix angle, and height. A series of semi-theoretical fouling correlations as a function of the product of area indexes and efficiency indexes are developed. The mass transfer coefficient is calculated by the Von-Karman analogy. The wall shear stress is obtained from the pressure drop. The correlations and the analyses can be used directly to assess the fouling potential of helical-rib in actual cooling water systems.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2010.02.034