Jure Berce (Author), Matevž Zupančič (Author), Matic Može (Author), Iztok Golobič (Author)

Abstract

A vast majority of heat exchangers suffer from unwanted deposition of material on the surface, which severely inhibits their performance and thus marks one of the biggest challenges in heat transfer. Despite numerous scientific investigations, prediction and prevention of fouling remain unresolved issues in process engineering and are responsible for large economic losses and environmental damage. This review article focuses specifically on crystallization fouling, providing a comprehensive overview of the state-of-the-art of fouling in heat exchangers. The fundamentals of the topic are discussed, as the term fouling resistance is introduced along with distinct fouling behaviour, observed in laboratory and industrial environments. Insight into subsequent phases of the fouling process is provided, along with the accompanying microscale events. Furthermore, the effects of fluid composition, temperature, flow velocity, surface condition, nucleate boiling and composite fouling are comprehensively discussed. Fouling modelling is systematically reviewed, from the early work of Kern and Seaton to recently used artificial neural networks and computational fluid dynamics. Finally, the most common fouling mitigation approaches are presented, including design considerations and various on-line strategies, as well as off-line cleaning. According to our review, several topics require further study, such as the initial stage of crystal formation, the effects of ageing, the interplay of two or more fouling mechanisms and the underlying phenomena of several mitigation strategies

Keywords

heat exchanger;fouling;energy efficiency;crystallization;fouling modelling;fouling mitigation;

Data

Language: English
Year of publishing:
Typology: 1.02 - Review Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 536.24:532.78
COBISS: 72562947 Link will open in a new window
ISSN: 2227-9717
Views: 954
Downloads: 164
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: prenosniki toplote;mešanje;energijska učinkovitost;kristalizacija;modeliranje mešanja;preprečevanje mešanja;
Type (COBISS): Article
Pages: Str. 1-24
Volume: ǂVol. ǂ9
Issue: ǂiss. ǂ8
Chronology: Aug. 2021
DOI: 10.3390/pr9081356
ID: 13223758
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