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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Non-newtonian flow and pressure drop of pineapple juice in a plate heat exchanger

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Author(s):
Cabral, R. A. F. [1] ; Gut, J. A. W. [2] ; Telis, V. R. N. [1] ; Telis-Romero, J. [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Paulista, Dept Food Engn & Technol, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
[2] Univ Sao Paulo, Escola Politecn, Dept Chem Engn, BR-05424970 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Brazilian Journal of Chemical Engineering; v. 27, n. 4, p. 563-571, OCT-DEC 2010.
Web of Science Citations: 7
Abstract

The study of non-Newtonian flow in plate heat exchangers (PHEs) is of great importance for the food industry. The objective of this work was to study the pressure drop of pineapple juice in a PHE with 50º chevron plates. Density and flow properties of pineapple juice were determined and correlated with temperature (17.4 < T < 85.8ºC) and soluble solids content (11.0 < Xs < 52.4 ºBrix). The Ostwald-de Waele (power law) model described well the rheological behavior. The friction factor for non-isothermal flow of pineapple juice in the PHE was obtained for diagonal and parallel/side flow. Experimental results were well correlated with the generalized Reynolds number (20 < Re g < 1230) and were compared with predictions from equations from the literature. The mean absolute error for pressure drop prediction was 4% for the diagonal plate and 10% for the parallel plate. (AU)