Selection of Heat Transfer Promoters for Heat Exchanger Retrofit

From the thermal point of view, the main operational problems conventional heat exchangers of the tubular type face are the prevalence of the laminar sublayer on the surface immediately adjacent to the heat transfer surface that is responsible for low heat transfer coefficients. A passive means of d...

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Autores principales:	Paola Durán-Plazas, Martín Picón-Núñez, Jesús I. Minchaca-Mojica
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/9642d80a0a19493e9513cfb6120b90aa
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spelling	oai:doaj.org-article:9642d80a0a19493e9513cfb6120b90aa2021-11-15T21:48:15ZSelection of Heat Transfer Promoters for Heat Exchanger Retrofit10.3303/CET21880872283-9216https://doaj.org/article/9642d80a0a19493e9513cfb6120b90aa2021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11880https://doaj.org/toc/2283-9216From the thermal point of view, the main operational problems conventional heat exchangers of the tubular type face are the prevalence of the laminar sublayer on the surface immediately adjacent to the heat transfer surface that is responsible for low heat transfer coefficients. A passive means of disrupting this layer is using mechanical inserts known as turbulence promoters. The search for new geometries with better thermohydraulic performance has increased the number of designs available in the open literature. In sight of the large number of different options available for use in design, the selection of the right type of insert for a given application is the focus of this paper and introduces an alternative approach for the selection of turbulence promoters based on the thermal and hydraulic lengths. The approach allows for a quick comparison of the thermo-hydraulic performance in design and retrofit. It considers the effect of the magnitude of the heat transfer coefficient of the opposing stream as well as the effect of viscosity on the selection. Some turbulence promoters out of the many that have been published are used to demonstrate the methodology. This work confirms that the two conditions that result in a greater impact of the turbulence promoter on the overall heat transfer coefficient are when the tube-side presents the higher thermal resistance and when a highly viscous fluid flows through the tubes.Paola Durán-PlazasMartín Picón-NúñezJesús I. Minchaca-MojicaAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Paola Durán-Plazas Martín Picón-Núñez Jesús I. Minchaca-Mojica Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
description	From the thermal point of view, the main operational problems conventional heat exchangers of the tubular type face are the prevalence of the laminar sublayer on the surface immediately adjacent to the heat transfer surface that is responsible for low heat transfer coefficients. A passive means of disrupting this layer is using mechanical inserts known as turbulence promoters. The search for new geometries with better thermohydraulic performance has increased the number of designs available in the open literature. In sight of the large number of different options available for use in design, the selection of the right type of insert for a given application is the focus of this paper and introduces an alternative approach for the selection of turbulence promoters based on the thermal and hydraulic lengths. The approach allows for a quick comparison of the thermo-hydraulic performance in design and retrofit. It considers the effect of the magnitude of the heat transfer coefficient of the opposing stream as well as the effect of viscosity on the selection. Some turbulence promoters out of the many that have been published are used to demonstrate the methodology. This work confirms that the two conditions that result in a greater impact of the turbulence promoter on the overall heat transfer coefficient are when the tube-side presents the higher thermal resistance and when a highly viscous fluid flows through the tubes.
format	article
author	Paola Durán-Plazas Martín Picón-Núñez Jesús I. Minchaca-Mojica
author_facet	Paola Durán-Plazas Martín Picón-Núñez Jesús I. Minchaca-Mojica
author_sort	Paola Durán-Plazas
title	Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
title_short	Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
title_full	Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
title_fullStr	Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
title_full_unstemmed	Selection of Heat Transfer Promoters for Heat Exchanger Retrofit
title_sort	selection of heat transfer promoters for heat exchanger retrofit
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/9642d80a0a19493e9513cfb6120b90aa
work_keys_str_mv	AT paoladuranplazas selectionofheattransferpromotersforheatexchangerretrofit AT martinpiconnunez selectionofheattransferpromotersforheatexchangerretrofit AT jesusiminchacamojica selectionofheattransferpromotersforheatexchangerretrofit
_version_	1718426800848109568

Selection of Heat Transfer Promoters for Heat Exchanger Retrofit

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