Particle-surface interactions in heat exchanger fouling

Bouris, D; Bergeles, G

dc.contributor.author	Bouris, D	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:12:11Z
dc.date.available	2014-03-01T01:12:11Z
dc.date.issued	1996	en
dc.identifier.issn	0098-2202	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11995
dc.subject	Heat Exchanger	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Calculations	en
dc.subject.other	Flow interactions	en
dc.subject.other	Flow measurement	en
dc.subject.other	Heat exchangers	en
dc.subject.other	Numerical methods	en
dc.subject.other	Particles (particulate matter)	en
dc.subject.other	Surfaces	en
dc.subject.other	Two phase flow	en
dc.subject.other	Deposition flux	en
dc.subject.other	Heat exchanger fouling	en
dc.subject.other	Particle surface interactions	en
dc.subject.other	Fouling	en
dc.title	Particle-surface interactions in heat exchanger fouling	en
heal.type	journalArticle	en
heal.identifier.primary	10.1115/1.2817797	en
heal.identifier.secondary	http://dx.doi.org/10.1115/1.2817797	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The problem of fouling is of vital importance to heat exchanger efficiency and should be considered during the design phase of the heat exchanger. The purpose of the present paper is to introduce a novel method to aid in the evaluation of the various parameters that affect the fouling phenomenon. The method considers the particle-surface interaction from the energy balance at the point of impaction and takes into consideration the material properties of the particle and surface as well as the effect of the surrounding flow field on the particle movement and impaction. The calculated deposition flux is used to form the deposit evolution in time considering the removal mechanisms resulting from fluid shear stress and the eroding impacts of the particles. The model is validated against experimental measurements of particle deposition from a two phase flow of hot gases around a circular cylinder. The experimentally measured flow field around a staggered tube bundle is also predicted and a fouling analysis is performed regarding the validity of fouling studies in scaled down model configurations. It is concluded that the actual dimensions of the heat exchanger configuration are of vital importance to its fouling behavior and scaling laws are difficult to apply.	en
heal.publisher	ASME-AMER SOC MECHANICAL ENG	en
heal.journalName	Journal of Fluids Engineering, Transactions of the ASME	en
dc.identifier.doi	10.1115/1.2817797	en
dc.identifier.isi	ISI:A1996VN19100022	en
dc.identifier.volume	118	en
dc.identifier.issue	3	en
dc.identifier.spage	574	en
dc.identifier.epage	581	en