Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21881
Tipo: Artigo
Título: Flow regime assessment in falling film evaporators using residence time distribution functions
Autor(es): Silveira, Arlan Caldas Pereira
Tanguy, Gaëlle
Perrone, Ítalo Tuler
Jeantet, Romain
Ducept, Fabrice
Carvalho, Antônio Fernandes de
Schuck, Pierre
Abstract: A falling film evaporator (FFE) is an industrial device to concentrate solutions. The aim of this study was to identify the flow regime, and characterize and model the residence time distribution (RTD) functions of a FFE. Experimental runs were carried out with skim milk at three different feed mass flow rates. Flow was characterized using experimental Reynolds number (Ref). The RTD function in the FFE was measured in four sections of the vacuum evaporator equipment. These RTD functions were modeled by a combination of perfectly mixed reactor tanks in series. In this study, when the flow regime changed from wavy-laminar to laminar, the mean residence time increased. The flow was analyzed as a main and a minor retarded flow, where two layers of product flowed through the evaporation tubes. The future of this work consists of extending the RTD approach to other products and operating conditions in the evaporator device.
Palavras-chave: Falling film evaporators
Skim milk
Residence time distribution
Flow regime
Editor: Journal of Food Engineering
Tipo de Acesso: Elsevier Ltd.
URI: https://doi.org/10.1016/j.jfoodeng.2015.03.016
http://www.locus.ufv.br/handle/123456789/21881
Data do documento: Set-2015
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