Thermal transfer analysis of tubes with extended surface with fractal design

Heat exchangers are formed by tubes with extended surfaces that improve the transfer of heat between two media (e.g., a solid and a liquid in motion). This paper presents the design of an extended surface tube with fractal geometry, corresponding to the Koch snowflake and the Cesaro curve. For the d...

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Main Authors: Luis Eduardo Llano-Sánchez, Darío Manuel Domínguez-Cajeli, Luis Carlos Ruiz-Cárdenas
Format: Article
Language:English
Published: Universidad Pedagógica y Tecnológica de Colombia 2018-01-01
Series:Revista Facultad de Ingeniería
Subjects:
Online Access:http://revistas.uptc.edu.co/index.php/ingenieria/article/view/7749
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author Luis Eduardo Llano-Sánchez
Darío Manuel Domínguez-Cajeli
Luis Carlos Ruiz-Cárdenas
author_facet Luis Eduardo Llano-Sánchez
Darío Manuel Domínguez-Cajeli
Luis Carlos Ruiz-Cárdenas
author_sort Luis Eduardo Llano-Sánchez
collection DOAJ
description Heat exchangers are formed by tubes with extended surfaces that improve the transfer of heat between two media (e.g., a solid and a liquid in motion). This paper presents the design of an extended surface tube with fractal geometry, corresponding to the Koch snowflake and the Cesaro curve. For the design, we used the CAD computational tool, and afterwards we performed the CAE finite element analysis and verified the thermal behavior of the designed tube. We were able to reduce the heat transfer time and increase the heat flow in the system in the following manner: for smooth tube, 250 W/m2; for Koch surface, 500 W/m2; for six fins, 1450 W/m2; and for Cesaro curve, 3600 W/m2. These results demonstrate the limits of the design and the advantages of its implementation in machinery such as condensers, heat exchangers, and boilers.
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spelling doaj.art-ec7cc31b8ed34e73acd69a64b0652d6f2022-12-22T03:11:12ZengUniversidad Pedagógica y Tecnológica de ColombiaRevista Facultad de Ingeniería0121-11292357-53282018-01-012747313710.19053/01211129.v27.n47.2018.77497749Thermal transfer analysis of tubes with extended surface with fractal designLuis Eduardo Llano-Sánchez0Darío Manuel Domínguez-Cajeli1Luis Carlos Ruiz-Cárdenas2Universidad Militar Nueva Granada (Bogotá-Distrito Capital, Colombia)Universidad Militar Nueva Granada (Bogotá-Distrito Capital, Colombia)Universidad Militar Nueva Granada (Bogotá-Distrito Capital, Colombia)Heat exchangers are formed by tubes with extended surfaces that improve the transfer of heat between two media (e.g., a solid and a liquid in motion). This paper presents the design of an extended surface tube with fractal geometry, corresponding to the Koch snowflake and the Cesaro curve. For the design, we used the CAD computational tool, and afterwards we performed the CAE finite element analysis and verified the thermal behavior of the designed tube. We were able to reduce the heat transfer time and increase the heat flow in the system in the following manner: for smooth tube, 250 W/m2; for Koch surface, 500 W/m2; for six fins, 1450 W/m2; and for Cesaro curve, 3600 W/m2. These results demonstrate the limits of the design and the advantages of its implementation in machinery such as condensers, heat exchangers, and boilers.http://revistas.uptc.edu.co/index.php/ingenieria/article/view/7749boilersCesaro curvefinite elementsfractal designheat transferKoch Snowflaketubes with extended surface
spellingShingle Luis Eduardo Llano-Sánchez
Darío Manuel Domínguez-Cajeli
Luis Carlos Ruiz-Cárdenas
Thermal transfer analysis of tubes with extended surface with fractal design
Revista Facultad de Ingeniería
boilers
Cesaro curve
finite elements
fractal design
heat transfer
Koch Snowflake
tubes with extended surface
title Thermal transfer analysis of tubes with extended surface with fractal design
title_full Thermal transfer analysis of tubes with extended surface with fractal design
title_fullStr Thermal transfer analysis of tubes with extended surface with fractal design
title_full_unstemmed Thermal transfer analysis of tubes with extended surface with fractal design
title_short Thermal transfer analysis of tubes with extended surface with fractal design
title_sort thermal transfer analysis of tubes with extended surface with fractal design
topic boilers
Cesaro curve
finite elements
fractal design
heat transfer
Koch Snowflake
tubes with extended surface
url http://revistas.uptc.edu.co/index.php/ingenieria/article/view/7749
work_keys_str_mv AT luiseduardollanosanchez thermaltransferanalysisoftubeswithextendedsurfacewithfractaldesign
AT dariomanueldominguezcajeli thermaltransferanalysisoftubeswithextendedsurfacewithfractaldesign
AT luiscarlosruizcardenas thermaltransferanalysisoftubeswithextendedsurfacewithfractaldesign