Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity
Convective heat transfer is one of the main thermal mechanisms in volumetric absorbers technology. There is a lack of literature on the behaviour of convective heat transfer in dense wire meshes. In this research, numerical simulations are used to determine the influence of geometrical parameters of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302200500X |
| _version_ | 1811295076458954752 |
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| author | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Jesus Fernandez-Reche Antonio L. Avila-Marin |
| author_facet | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Jesus Fernandez-Reche Antonio L. Avila-Marin |
| author_sort | Daniel Sanchez-Señoran |
| collection | DOAJ |
| description | Convective heat transfer is one of the main thermal mechanisms in volumetric absorbers technology. There is a lack of literature on the behaviour of convective heat transfer in dense wire meshes. In this research, numerical simulations are used to determine the influence of geometrical parameters of dense wire meshes, such as wire diameter and mesh count, in obtaining the local volumetric Nusselt coefficient. In order to achieve that aim, a sensitivity study of the inlet air velocity (0.5–5 m/s) and wire temperature (700 K, 1100 K and 1500 K) has been performed with different staggered stacked wire mesh configurations. The fixed single screen and staggered porosity of the studied configurations are 80% and 64% respectively, however the wire diameters in each configuration range from 0.1 mm to 0.7 mm. As a result of this study, the effect of the convection heat transfer is more emphasized in larger wire diameters than in smaller ones. In summary, the flow and heat transfer can be modified without changing the porosity. |
| first_indexed | 2024-04-13T05:26:56Z |
| format | Article |
| id | doaj.art-c5e002e2a9c447bc937a9bdd2422fca9 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-04-13T05:26:56Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-c5e002e2a9c447bc937a9bdd2422fca92022-12-22T03:00:34ZengElsevierResults in Engineering2590-12302023-03-0117100830Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosityDaniel Sanchez-Señoran0Miguel A. Reyes-Belmonte1Jesus Fernandez-Reche2Antonio L. Avila-Marin3Point Focus Solar Thermal Technologies Unit, CIEMAT, Av. Complutense, 40, Madrid Spain; Chemical, Energy and Mechanical Technology, Rey Juan Carlos University (ESCET), C/Tulipán, s/n, Móstoles SpainChemical, Energy and Mechanical Technology, Rey Juan Carlos University (ESCET), C/Tulipán, s/n, Móstoles SpainPoint Focus Solar Thermal Technologies Unit, Almeria Solar Platform, P.O. Box, 22, Tabernas SpainPoint Focus Solar Thermal Technologies Unit, CIEMAT, Av. Complutense, 40, Madrid Spain; Corresponding author.Convective heat transfer is one of the main thermal mechanisms in volumetric absorbers technology. There is a lack of literature on the behaviour of convective heat transfer in dense wire meshes. In this research, numerical simulations are used to determine the influence of geometrical parameters of dense wire meshes, such as wire diameter and mesh count, in obtaining the local volumetric Nusselt coefficient. In order to achieve that aim, a sensitivity study of the inlet air velocity (0.5–5 m/s) and wire temperature (700 K, 1100 K and 1500 K) has been performed with different staggered stacked wire mesh configurations. The fixed single screen and staggered porosity of the studied configurations are 80% and 64% respectively, however the wire diameters in each configuration range from 0.1 mm to 0.7 mm. As a result of this study, the effect of the convection heat transfer is more emphasized in larger wire diameters than in smaller ones. In summary, the flow and heat transfer can be modified without changing the porosity.http://www.sciencedirect.com/science/article/pii/S259012302200500XVolumetric absorbersVolumetric receiversCFD simulationsHeat transfer coefficientCentral receiver system |
| spellingShingle | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Jesus Fernandez-Reche Antonio L. Avila-Marin Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity Results in Engineering Volumetric absorbers Volumetric receivers CFD simulations Heat transfer coefficient Central receiver system |
| title | Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| title_full | Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| title_fullStr | Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| title_full_unstemmed | Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| title_short | Numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| title_sort | numerical simulation of convective heat transfer coefficient in wire mesh absorbers with fixed porosity |
| topic | Volumetric absorbers Volumetric receivers CFD simulations Heat transfer coefficient Central receiver system |
| url | http://www.sciencedirect.com/science/article/pii/S259012302200500X |
| work_keys_str_mv | AT danielsanchezsenoran numericalsimulationofconvectiveheattransfercoefficientinwiremeshabsorberswithfixedporosity AT miguelareyesbelmonte numericalsimulationofconvectiveheattransfercoefficientinwiremeshabsorberswithfixedporosity AT jesusfernandezreche numericalsimulationofconvectiveheattransfercoefficientinwiremeshabsorberswithfixedporosity AT antoniolavilamarin numericalsimulationofconvectiveheattransfercoefficientinwiremeshabsorberswithfixedporosity |