Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers

Flow pattern in the tubes of an innovative scraped surface heat exchanger with reciprocating scrapers has been experimentally investigated. The scraper consists of a concentric rod inserted in each tube of the heat exchanger, mounting an array of semicircular plugs that fit the inner tube wall. A hy...

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Detalles Bibliográficos
Autores: Solano Fernández, Juan Pedro, García Pinar, Alberto, Vicente Quiles, Pedro Ginés, Viedma Robles, Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:España
Institución:Universidad Politécnica de Cartagena(UPCT)
Repositorio:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/4471
Acceso en línea:http://hdl.handle.net/10317/4471
Access Level:acceso abierto
Palabra clave:Scraped surface heat exchanger
SSH
Particle image velocimetry
PIV
Flow pattern
CFD
Mecánica de Fluidos
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spelling Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat ExchangersSolano Fernández, Juan PedroGarcía Pinar, AlbertoVicente Quiles, Pedro GinésViedma Robles, AntonioScraped surface heat exchangerSSHParticle image velocimetryPIVFlow patternCFDMecánica de FluidosFlow pattern in the tubes of an innovative scraped surface heat exchanger with reciprocating scrapers has been experimentally investigated. The scraper consists of a concentric rod inserted in each tube of the heat exchanger, mounting an array of semicircular plugs that fit the inner tube wall. A hydraulic piston provides the scraper with constant-velocity reciprocating motion. Phase-averaged velocity fields have been obtained with PIV technique for both scraping semi-cycles, with special emphasis on the effect of the scraping velocity (velocity ratio) and Reynolds number. Visualization results have been contrasted with experimental data on Fanning friction factor, obtaining a clear relation between flow patterns, pressure drop augmentation and turbulence promotion. CFD simulations for quasi-steady laminar flow provide a further insight into the relation of the flow structures with wall shear stress, and the contribution of pressure forces to global head losses, for each scraping semi-cycle.This research has been partially financed by the DPI2007- 66551-C02 grant of the Spanish Ministery of Science and the company ”HRS Spiratube”. The authors are grateful to SEDIC-SAIT (UPCT) for providing the technical resources for CFD computationsElsevierMecánica de Fluidos e Ingeniería Térmica201520152011info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/4471reponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)InglésAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/44712026-05-15T06:39:02Z
dc.title.none.fl_str_mv Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
title Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
spellingShingle Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
Solano Fernández, Juan Pedro
Scraped surface heat exchanger
SSH
Particle image velocimetry
PIV
Flow pattern
CFD
Mecánica de Fluidos
title_short Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
title_full Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
title_fullStr Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
title_full_unstemmed Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
title_sort Flow Pattern Assessment in Tubes of Reciprocating Scraped Surface Heat Exchangers
dc.creator.none.fl_str_mv Solano Fernández, Juan Pedro
García Pinar, Alberto
Vicente Quiles, Pedro Ginés
Viedma Robles, Antonio
author Solano Fernández, Juan Pedro
author_facet Solano Fernández, Juan Pedro
García Pinar, Alberto
Vicente Quiles, Pedro Ginés
Viedma Robles, Antonio
author_role author
author2 García Pinar, Alberto
Vicente Quiles, Pedro Ginés
Viedma Robles, Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Mecánica de Fluidos e Ingeniería Térmica
dc.subject.none.fl_str_mv Scraped surface heat exchanger
SSH
Particle image velocimetry
PIV
Flow pattern
CFD
Mecánica de Fluidos
topic Scraped surface heat exchanger
SSH
Particle image velocimetry
PIV
Flow pattern
CFD
Mecánica de Fluidos
description Flow pattern in the tubes of an innovative scraped surface heat exchanger with reciprocating scrapers has been experimentally investigated. The scraper consists of a concentric rod inserted in each tube of the heat exchanger, mounting an array of semicircular plugs that fit the inner tube wall. A hydraulic piston provides the scraper with constant-velocity reciprocating motion. Phase-averaged velocity fields have been obtained with PIV technique for both scraping semi-cycles, with special emphasis on the effect of the scraping velocity (velocity ratio) and Reynolds number. Visualization results have been contrasted with experimental data on Fanning friction factor, obtaining a clear relation between flow patterns, pressure drop augmentation and turbulence promotion. CFD simulations for quasi-steady laminar flow provide a further insight into the relation of the flow structures with wall shear stress, and the contribution of pressure forces to global head losses, for each scraping semi-cycle.
publishDate 2011
dc.date.none.fl_str_mv 2011
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/4471
url http://hdl.handle.net/10317/4471
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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