Numerical calculation of the effect of deposit formation on heat-exchanger efficiency

Bouris, D; Bergeles, G

dc.contributor.author	Bouris, D	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:13:13Z
dc.date.available	2014-03-01T01:13:13Z
dc.date.issued	1997	en
dc.identifier.issn	0017-9310	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12368
dc.subject	Boundary Condition	en
dc.subject	Heat Exchanger	en
dc.subject	Heat Transfer	en
dc.subject	Numerical Calculation	en
dc.subject	Temperature Field	en
dc.subject	Thermal Resistance	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Computational methods	en
dc.subject.other	Heat exchangers	en
dc.subject.other	Heat resistance	en
dc.subject.other	Heat transfer	en
dc.subject.other	Tubes (components)	en
dc.subject.other	Turbulence	en
dc.subject.other	Orthogonal curvilinear grid	en
dc.subject.other	Solid fluid interface	en
dc.subject.other	Boiler deposits	en
dc.subject.other	deposits	en
dc.subject.other	efficiency	en
dc.subject.other	heat exchangers	en
dc.subject.other	pipes	en
dc.subject.other	temperature distributions	en
dc.title	Numerical calculation of the effect of deposit formation on heat-exchanger efficiency	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0017-9310(97)00058-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0017-9310(97)00058-6	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	A numerically calculated deposit was used to identify the shape of a fouled tube and an orthogonal curvilinear grid was constructed in and around the deposit. The flow and temperature field was calculated and an implicit boundary condition, accounting for the effects of turbulence, was introduced at the solid-fluid interface for the simultaneous calculation of the temperature held in the fluid and the solid. Validation is presented against experimental and numerical calculations. Finally, a reduction of 8-17% in the heat transfer rate was found to occur for a deposit corresponding to 8 h of operation in a staggered tube bundle heat-exchanger of a lignite utility boiler. Thermal resistance of the deposit was also calculated. (C) 1997 Elsevier Science Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Heat and Mass Transfer	en
dc.identifier.doi	10.1016/S0017-9310(97)00058-6	en
dc.identifier.isi	ISI:A1997XP71900009	en
dc.identifier.volume	40	en
dc.identifier.issue	17	en
dc.identifier.spage	4073	en
dc.identifier.epage	4084	en