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Heat Exchanger Fouling and Cleaning: Fundamentals and Applications
May 18-22, 2003 - Santa Fe, New Mexico, USA
| Editors: |
Paul Watkinson, University of British Columbia, Canada
Hans Müller-Steinhagen, German Aerospace Centre (DLR) and University of Stuttgart
M. Reza Malayeri, German Aerospace Centre (DLR) |
The articles for these proceedings are peer-reviewed.
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Fouling and Cleaning of Modified Stainless Steel Plate Heat Exchangers Processing Milk Products
M. Beuf, INRA-LGPTA
G. Rizzo, University of Stuttgart
J. C. Leuliet, INRA-LGPTA
H. Müller-Steinhagen, University of Stuttgart
S. Yiantsios, Aristote University of Thessaloniki
A. Karabelas, Aristote University of Thessaloniki
T. Benezech , INRA-LGPTA
ABSTRACT:
Fouling of heat exchangers in dairy industries is still quite a severe problem both technically and economically. Altering the surface properties of the heating surfaces would be a way of solving this issue.
Modified steel surfaces were tested in an Alfa Laval V2 plate heat exchanger throughout dairy product sterilization. The behavior was analyzed for 8 different surface treatments, such as coatings (Diamond Like Carbon [DLC], Silica, SiOX, Ni-P-PTFE, Excalibur®, Xylan®) and ion implantation (SiF+, MoS2).
All fouling and cleaning experiments were carried out in standard and well-controlled operating conditions. After fouling, no significant difference could be seen between all the modified steels and the reference by statistical variance analysis. Cleaning efficiency of Ni-PPTFE appeared significantly the best. It could be suggested that the free surface energy plays a predominant role and the roughness a minor role in the level of fouling and cleaning efficiency.
M. Beuf, G. Rizzo, J. C. Leuliet, H. Müller-Steinhagen, S. Yiantsios, A. Karabelas, and T. Benezech , "Fouling and Cleaning of Modified Stainless Steel Plate Heat Exchangers Processing Milk Products" in "Heat Exchanger Fouling and Cleaning: Fundamentals and Applications", Paul Watkinson, Hans Müller-Steinhagen, and M. Reza Malayeri Eds, ECI
Symposium Series, Volume RP1 (2003). http://services.bepress.com/eci/heatexchanger/14
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