Choosing when to clean and how to clean biofilms in heat exchangers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Thomas A. Pogiatzis (Autor) Outra; Vassilis S. Vassiliadis (Autor) Outra; Filipe J. Mergulhão (Autor) FEUP; D. Ian Wilson (Autor) Outra

Revista

Título: Heat Transfer Engineering

Vol. 36 Nº 7-8

Páginas: 676-684

ISSN: 0145-7632

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 3 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-009-Z8R

DOI: 10.1080/01457632.2015.954940

Abstract (EN): Biofouling in heat exchangers can be managed by regular cleaning. A mathematical framework for the optimization problem involved in selecting the best cleaning schedules for such units is presented that considers (i) an induction period associated with conditioning and colonization, which introduces complexity to the fouling kinetics, and (ii) the existence of several outcomes from cleaning, depending on the choice of cleaning method. The problem is to decide how, when, and which exchanger to clean. A mixed integer nonlinear programming approach, based on the use of a logistic function to model fouling resistance-time dynamics, is shown to give tractable results. The methodology is illustrated with a case study involving a small network of three heat exchangers. An optimized solution based on a cost/performance analysis shows that the cleaning intervals and cleaning methods differ for each exchanger.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9