Non-newtonian heat transfer on a plate heat exchanger with generalized configurations
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Data
2007-01-01
Autores
Carezzato, Alessandra
Alcantara, Maria R.
Telis-Romero, Javier
Tadini, Carmen C.
Gut, Jorge A. W.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Wiley-Blackwell
Resumo
For the configuration optimization of plate heat exchangers (PHEs), the mathematical models for heat transfer and pressure drop must be valid for a wide range of operational conditions of all configurations of the exchanger or the design results may be compromised. In this investigation, the thermal model of a PHE is adjusted to fit experimental data obtained from non-Newtonian heat transfer for eight different configurations, using carboxymethylcellulose solutions (CMC) as test fluid. Although it is possible to successfully adjust the model parameters, Newtonian and non-Newtonian heat transfer cannot be represented by a single generalized correlation. In addition, the specific heat, thermal conductivity and power-law rheological parameters of CMC solutions were correlated with temperature, over a range compatible with a continuous pasteurization process.
Descrição
Palavras-chave
heat exchangers, non-Newtonian fluids, process modeling
Como citar
Chemical Engineering & Technology. Weinheim: Wiley-v C H Verlag Gmbh, v. 30, n. 1, p. 21-26, 2007.