RESEARCH PAPERS: Heat Exchangers

Statistical Aspects of CaCO3 Fouling in AISI 316 Stainless-Steel Tubes

[+] Author and Article Information
S. M. Zubair, A. K. Sheikh, M. O. Budair, M. U. Haq

Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dharan 31261, Saudi Arabia

A. Quddus, O. A. Ashiru

Research Institute, King Fahd University of Petroleum and Minerals, Dharan 31261, Saudi Arabia

J. Heat Transfer 119(3), 581-588 (Aug 01, 1997) (8 pages) doi:10.1115/1.2824145 History: Received October 29, 1996; Revised April 21, 1997; Online December 05, 2007


Calcium carbonate fouling is typically encountered in a cooling-water circulating system. An experimental program is initiated to study fouling growth law (s) as well as the basic mechanism of calcium carbonate (CaCO3 ) scaling. After a brief description of the experimental apparatus and procedure for calculating fouling resistance, we present the deposition data in terms of fouling resistance as a function of time taken at different sections of the tube. In addition, the randomness of fouling growth is illustrated by repeating the experiments several times under the same thermal-hydraulic conditions. The results are presented in terms of a set of sample functions and their associated probability density functions at various levels of fouling. In addition, basic mechanism of CaCO3 scale formation is also explained through Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX).

Copyright © 1997 by The American Society of Mechanical Engineers
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