Análisis dimensional de los intercambiadores de calor de tubos concéntricos con superficies extendidas en planta piloto UNAB

Sánchez Ropero, Andrés Fernando

dc.contributor.advisor	Pacheco Sandoval, Leonardo Esteban	spa
dc.contributor.author	Sánchez Ropero, Andrés Fernando	spa
dc.coverage.spatial	Bucaramanga (Santander, Colombia)	spa
dc.date.accessioned	2020-09-27T18:31:03Z
dc.date.available	2020-09-27T18:31:03Z
dc.date.issued	2019
dc.identifier.uri	http://hdl.handle.net/20.500.12749/7255
dc.description.abstract	En este proyecto, el análisis dimensional para intercambiadores de calor con tubos concéntricos con superficies extendidas fue llevado a cabo a partir del desarrollo del teorema de Pi Buckingham. Los resultados arrojaron información de los parámetros propuestos y se concluyó que Pr y Re influyen significativamente sobre Nu en todos los escenarios evaluados; la relación de espaciamiento y longitud de aletas σ brindó información relevante para la evaluación de la transferencia de calor de los intercambiadores con cambios en la longitud de las aletas siendo directamente proporcional con Nu; de igual forma la relación de área perforada λ para modificaciones con agujeros circulares indicó que con los arreglos de 4 y 6 aletas guarda una relación directa y con el de 8 aletas inversamente proporcional en el rango de 0,09-0,25. A su vez, se obtuvieron correlaciones a partir de data experimental y de simulaciones en el software COMSOL para la estimación de Nu en convección forzada y se validaron los datos con convergencia para el modelo empírico de ∅ = 0,95535 y ∅ = 0,92803 para el modelo computacional.	spa
dc.description.tableofcontents	LISTADO DE TABLAS ....................................................................................................................... 6 LISTADO DE FIGURAS ..................................................................................................................... 7 INTRODUCCIÓN............................................................................................................................... 10 1. OBJETIVOS .............................................................................................................................. 12 1.1 OBJETIVO GENERAL ................................................................................................................... 12 1.2 OBJETIVOS ESPECÍFICOS ............................................................................................................ 12 2. MARCO TEÓRICO.................................................................................................................... 13 2.1 BANCO DE INTERCAMBIADORES DE CALOR UNAB ........................................................................ 13 2.2 TRANSFERENCIA DE CALOR ........................................................................................................ 14 2.2.1 Conceptos ........................................................................................................................ 14 2.2.1.1 Conducción .............................................................................................................................. 15 2.2.1.2 Convección .............................................................................................................................. 15 2.3 INTERCAMBIADORES DE CALOR ................................................................................................... 16 2.3.1 Análisis de los intercambiadores de calor ........................................................................ 17 2.3.2 Diferencia media logarítmica de temperatura ∆𝑻𝒎𝒍 ........................................................ 19 2.4 MODELADO COMPUTACIONAL ...................................................................................................... 20 2.4.1 Software COMSOL Multiphysics 5.4 ................................................................................ 20 2.4.1.1 Módulo transferencia de calor .................................................................................................. 20 2.4.1.2 Módulo dinámica de fluidos computacional CFD ..................................................................... 20 2.5 ANÁLISIS DIMENSIONAL............................................................................................................... 21 2.5.1 Generalidades .................................................................................................................. 21 2.5.2 Teorema de π Buckingham .............................................................................................. 22 2.5.2.1 Determinación de los grupos π ................................................................................................ 23 2.5.3 Parámetros adimensionales comúnmente utilizados ....................................................... 25 2.6 ANÁLISIS ESTADÍSTICO ............................................................................................................... 26 2.6.1 Generalidades .................................................................................................................. 26 3. METODOLOGÍA ....................................................................................................................... 27 4. DESARROLLO ......................................................................................................................... 29 4.1 ESCENARIO ICTCSE ................................................................................................................. 29 4.2 ESCENARIOS ADICIONALES PROPUESTOS .................................................................................... 33 4.3 DESARROLLO DEL TEOREMA ADIMENSIONAL ............................................................................... 36 4.4 CORRELACIONES ESTADÍSTICAS ................................................................................................. 47 5. RESULTADOS .......................................................................................................................... 49 5.1 ESCENARIO ICTCSE ................................................................................................................. 49 5.2 ESCENARIOS ADICIONALES ......................................................................................................... 57 5.2.1 Variación de longitud en las aletas .................................................................................. 57 5.2.2 Modificaciones en el área superficial de las aletas .......................................................... 63 6. CONCLUSIONES ...................................................................................................................... 69 7. RECOMENDACIONES ............................................................................................................. 71 BIBLIOGRAFÍA................................................................................................................................. 72 ANEXOS ........................................................................................................................................... 75	spa
dc.format.mimetype	application/pdf	spa
dc.language.iso	spa	spa
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/2.5/co/	*
dc.title	Análisis dimensional de los intercambiadores de calor de tubos concéntricos con superficies extendidas en planta piloto UNAB	spa
dc.title.translated	Dimensional analysis of concentric tube heat exchangers with extended surfaces in UNAB pilot plant	spa
dc.degree.name	Ingeniero en Energía	spa
dc.publisher.grantor	Universidad Autónoma de Bucaramanga UNAB	spa
dc.rights.local	Abierto (Texto Completo)	spa
dc.publisher.program	Pregrado Ingeniería en Energía	spa
dc.description.degreelevel	Pregrado	spa
dc.type.driver	info:eu-repo/semantics/bachelorThesis
dc.type.local	Trabajo de Grado	spa
dc.type.coar	http://purl.org/coar/resource_type/c_7a1f
dc.subject.keywords	Energy engineering	eng
dc.subject.keywords	Technological innovations	eng
dc.subject.keywords	Energy	eng
dc.subject.keywords	Dimensional analysis	eng
dc.subject.keywords	Buckingham Pi	eng
dc.subject.keywords	Theorem	eng
dc.subject.keywords	Extended surfaces	eng
dc.subject.keywords	Heat transfer	eng
dc.subject.keywords	Heat exchangers	eng
dc.subject.keywords	Hot	eng
dc.identifier.instname	instname:Universidad Autónoma de Bucaramanga - UNAB	spa
dc.identifier.reponame	reponame:Repositorio Institucional UNAB	spa
dc.type.hasversion	info:eu-repo/semantics/acceptedVersion
dc.rights.accessrights	info:eu-repo/semantics/openAccess	spa
dc.rights.accessrights	http://purl.org/coar/access_right/c_abf2	spa
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dc.contributor.cvlac	https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001478220	*
dc.contributor.googlescholar	https://scholar.google.es/citations?hl=es&user=yZ1HEiIAAAAJ	*
dc.contributor.orcid	https://orcid.org/0000-0001-7262-382X	*
dc.contributor.scopus	https://www.scopus.com/authid/detail.uri?authorId=56117105700	*
dc.contributor.researchgate	https://www.researchgate.net/profile/Leonardo_Esteban_Pacheco_Sandoval	*
dc.subject.lemb	Ingeniería en energía	spa
dc.subject.lemb	Innovaciones tecnológicas	spa
dc.subject.lemb	Energía	spa
dc.subject.lemb	Transmisión de calor	spa
dc.subject.lemb	Intercambiadores de calor	spa
dc.subject.lemb	Calor	spa
dc.identifier.repourl	repourl:https://repository.unab.edu.co	spa
dc.description.abstractenglish	In this Project, dimensional analysis has been carried out about concentrical tubes heat exchangers with extended surfaces from development of Buckingham’s Pi Theorem. The results showed information about the proposed parameters and it was concluded that Pr and Re influence over Nu in all the scenarios evaluated; the ratio of spacing and fin length σ provided relevant information for the evaluation of heat transfer of exchangers with changes in fin length being directly proportional to Nu; Likewise, the ratio of perforated area λ for modifications with circular holes specified with the arrangements of 4 and 6 fins keeps a direct relationship and inversely proportional with 8 fins in the range of 0.09-0.25. In turn, we obtained correlations of experimental and simulation data in COMSOL software for the modification of Nu in forced convection and the data were validated with convergence of ∅ = 0,95535 for the empirical model and ∅ = 0,92803 for the computational model.	eng
dc.subject.proposal	Análisis dimensional	spa
dc.subject.proposal	Teorema Pi	spa
dc.subject.proposal	Buckingham	spa
dc.subject.proposal	Superficies extendidas	spa
dc.type.redcol	http://purl.org/redcol/resource_type/TP
dc.rights.creativecommons	Atribución-NoComercial-SinDerivadas 2.5 Colombia	*
dc.coverage.campus	UNAB Campus Bucaramanga	spa
dc.description.learningmodality	Modalidad Presencial	spa