Prediction of the Scale Removal Rate in Heat Exchanger Piping System Using the Analogies between Mass and Momentum Transfer
Abstract
The possibility of predicting the mass transfer controlled CaCO3 scale removal rate has been investigated.
Experiments were carried out using chelating agents as a cleaning solution at different time and Reynolds’s number. The results of CaCO3 scale removal or (mass transfer rate) (as it is the controlling process) are compared with proposed model of prandtl’s and Taylor particularly based on the concept of analogy among momentum and mass transfer.
Correlation for the variation of Sherwood number ( or mass transfer rate ) with Reynolds’s number have been obtained .
Downloads
References
[2] Wasco, J.L, and F.N. Al qurst , Ind.Eng.Chem.38,4, 394 ( 1946).
[3] Cowan , J.C., and D J. Weintritt , Water-formed scal deposits, Gulf publishing (1976).
[4] Powell ,s.t, " Water conditioning for industry " 1st ed .,Mc Graw –Hill ( 1954)
[5] Dr.Prakash R.Kota "Principles of reactive interfacial chemical cleaning"(Internet document)(2003) .
[6] Schmidt , N.O. and W .S. Wise, Ind. .Eng. cleaning 50,5,811 ( 1958).
[7] Philip J.W. Roberts and Donald R. Webster “ Turbulent Diffusion “ school of Civil and Environmental Engineering , Georgia, Institute of Technology , Atlantes . (2002)(Internet document).
[8] Najwa S. Majeed , PhD Thesis , Dept.of Chem. Eng. University of Baghdad , Iraq. October ( 2004).
[9] Bradley , G . W . and J . A . smith , Mtls prot . p. 391 , (1983).
[10] Coulson ,J . M . and J. F . Richardson , Chemical engineering , 3rd edition ( 1977).
[11] Knudsen , J . G . and D . L . Katz , “ Fluid dynamics and heat transfer “ MC Graw Hill , New York , ( 1958).
[12] Petukhov , B . S ., Heat transfer and friction in turulent pipe flow with variable physical properties, Advances in heat trans , Vol. 6 , So3 ( ( 1970 ) .
[13] Brodkey, R . S . and HC. Hershey, Transport phenomena, Anified approach, Mc Graw Hill (1988) .
Downloads
Published
Issue
Section
License
Copyright: Open Access authors retain the copyrights of their papers, and all open access articles are distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations. While the advice and information in this journal are believed to be true and accurate on the date of its going to press, neither the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
