NUMERICAL STUDY OF MILK FOULING THICKNESS IN THE CHANNEL OF PLATE HEAT EXCHANGER

Fouling phenomenon remains at the forefront of problems that concern manufacturers using heat exchangers. Despite the large number of studies carried out, the mechanism and the evolution of this phenomenon remain poorly understood. In the dairy industry, fouling is a very important parameter seen as it can affect the quality of food product. Studies carried out on this phenomenon during milk heat treatment have led to the conclusion that lacotglobulin protein is the main precursor of fouling. Indeed, the thermal instability of this protein undergoes chemical reactions generating an aggregate that accumulates on the hot walls of heat exchanger. In this work, an attempt to model, numerically, milk fouling during pasteurization was carried out. Wall temperature and fouling thickness distributions were studied along the channel. This permits to determine a mathematical relationship between fouling thickness and wall temperature.

Keywords:

Milk Fouling, Plate Heat Exchanger, Modeling,

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[1] Lalande, M., Tissier, J. P. (1985). Fouling of heat transfer surfaces related to β‐lactoglobulin denaturation during heat processing of milk. Biotechnology progress, 1(2), 131-139.
[2] Toyoda I., P. J. Fryer (1997). A computational model for reaction and mass transfer in fouling from whey protein solutions, Begell Hou. New York.
[3] Georgiadis, M. C., Macchietto, S. (2000). Dynamic modelling and simulation of plate heat exchangers under milk fouling. Chemical Engineering Science, 55(9), 1605-1619.
[4] Jun, S., Puri, V. M. (2006). A 2D dynamic model for fouling performance of plate heat exchangers. Journal of Food Engineering, 75(3), 364-374.
[5] Mahdi, Y., Mouheb, A., Oufer, L. (2009). A dynamic model for milk fouling in a plate heat exchanger. Applied mathematical modelling, 33(2), 648-662.
[6] Petit, J., Herbig, A. L., Moreau, A., Delaplace, G. (2011). Influence of calcium on β-lactoglobulin denaturation kinetics: Implications in unfolding and aggregation mechanisms. Journal of dairy science, 94(12), 5794-5810.
[7] Erabit, N., Flick, D., Alvarez, G. (2013). Effect of calcium chloride and moderate shear on β-lactoglobulin aggregation in processing-like conditions. Journal of food engineering, 115(1), 63-72.
[8] Khaldi, M., Ronse, G., André, C., Blanpain-Avet, P., Bouvier, L., Six, T., Delaplace, G. (2015). Denaturation kinetics of whey protein isolate solutions and fouling mass distribution in a plate heat exchanger. International Journal of Chemical Engineering, 2015.
[9] Bouvier, L., Moreau, A., Ronse, G., Six, T., Petit, J., Delaplace, G. (2014). A CFD model as a tool to simulate β-lactoglobulin heat-induced denaturation and aggregation in a plate heat exchanger. Journal of Food Engineering, 136, 56-63.
[10] Patankar, S. (1980). Numerical heat transfer and fluid flow. CRC press.
[11] Aouanouk, S. A., Mouheb, A., Absi, R., Zazoun, R. (2017). The behavior of ß-lactoglobulin protein in plate heat exchanger’s channel during milk heat treatment. Acta Alimentaria, 46(4), 411-419.
[12] Tissier, J. P., Lalande, M. (1986). Experimental device and methods for studying milk deposit formation on heat exchange surfaces. Biotechnology Progress, 2(4), 218-229.

Başlangıç: 2015
Yayıncı: YILDIZ TEKNİK ÜNİVERSİTESİ

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