Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers
Open volumetric receivers using air as the heat transfer fluid can operate at higher temperatures and thermal efficiencies than the current state of the art in central receiver systems. Optimising their design requires detailed understanding of two critical operational attributes: the heat transfer...
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Elsevier
2025-02-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X2401760X |
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| author | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Michael P. Kinzel Marina Casanova Antonio L. Avila-Marin |
| author_facet | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Michael P. Kinzel Marina Casanova Antonio L. Avila-Marin |
| author_sort | Daniel Sanchez-Señoran |
| collection | DOAJ |
| description | Open volumetric receivers using air as the heat transfer fluid can operate at higher temperatures and thermal efficiencies than the current state of the art in central receiver systems. Optimising their design requires detailed understanding of two critical operational attributes: the heat transfer coefficient (HTC) and the pressure drop. This work examines these attributes in two dense wire mesh absorber arrangements, inline (IL) and staggered (ST), with single-mesh porosities of 80 % and wire diameters of 0.7, 0.4 and 0.1 mm. A 2D porous model or homogeneous equivalent model (HEM) with local thermal non-equilibrium (LTNE) is developed, using a flux density of 600 kW/m2 and an air inlet velocity of 1 m/s. The model is experimentally validated and subsequently used to evaluate the generalised correlations (GCs) obtained for the thermo-fluid-dynamic attributes with those derived from the individual correlations (ICs). In addition, the model assesses the impact of the different wire diameters and arrangements on thermal and fluid flow performance. The findings reveal that the ST arrangement generally outperforms the IL arrangement in thermal efficiency, except for the 0.1 mm wire diameter. Conversely, the IL arrangement demonstrates superior hydrodynamic performance. Finally, the results are corroborated with existing literature, which further validates the reliability of the numerical model and its conclusions. |
| format | Article |
| id | doaj-art-a36f21dc03b14e5a85b644f7f6f10ee6 |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-a36f21dc03b14e5a85b644f7f6f10ee62025-02-02T05:27:17ZengElsevierCase Studies in Thermal Engineering2214-157X2025-02-0166105729Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receiversDaniel Sanchez-Señoran0Miguel A. Reyes-Belmonte1Michael P. Kinzel2Marina Casanova3Antonio L. Avila-Marin4CIEMAT, Plataforma Solar de Almeria, Point Focus Solar Thermal Technologies Unit, Avda. Complutense, 40, Madrid, E-28040, Spain; Rey Juan Carlos University, Chemical, Energy and Mechanical Technology, C/Tulipán, s/n, Móstoles, Madrid, E-28933, SpainRey Juan Carlos University, Chemical, Energy and Mechanical Technology, C/Tulipán, s/n, Móstoles, Madrid, E-28933, SpainEmbry Riddle Aeronautical University, Aerospace Engineering, 1 Aerospace Blvd, Daytona Beach, FL, 32114, USACIEMAT, Plataforma Solar de Almeria, Solar Energy Storage Unit, km 4.5 Crta. de Senes, Tabernas, Almeria, E-04200, SpainCIEMAT, Plataforma Solar de Almeria, Point Focus Solar Thermal Technologies Unit, Avda. Complutense, 40, Madrid, E-28040, Spain; Corresponding author.Open volumetric receivers using air as the heat transfer fluid can operate at higher temperatures and thermal efficiencies than the current state of the art in central receiver systems. Optimising their design requires detailed understanding of two critical operational attributes: the heat transfer coefficient (HTC) and the pressure drop. This work examines these attributes in two dense wire mesh absorber arrangements, inline (IL) and staggered (ST), with single-mesh porosities of 80 % and wire diameters of 0.7, 0.4 and 0.1 mm. A 2D porous model or homogeneous equivalent model (HEM) with local thermal non-equilibrium (LTNE) is developed, using a flux density of 600 kW/m2 and an air inlet velocity of 1 m/s. The model is experimentally validated and subsequently used to evaluate the generalised correlations (GCs) obtained for the thermo-fluid-dynamic attributes with those derived from the individual correlations (ICs). In addition, the model assesses the impact of the different wire diameters and arrangements on thermal and fluid flow performance. The findings reveal that the ST arrangement generally outperforms the IL arrangement in thermal efficiency, except for the 0.1 mm wire diameter. Conversely, the IL arrangement demonstrates superior hydrodynamic performance. Finally, the results are corroborated with existing literature, which further validates the reliability of the numerical model and its conclusions.http://www.sciencedirect.com/science/article/pii/S2214157X2401760XVolumetric receiversCentral receiver systemCFD simulationsConcentrated solar powerHomogeneous equivalent modelPorous model |
| spellingShingle | Daniel Sanchez-Señoran Miguel A. Reyes-Belmonte Michael P. Kinzel Marina Casanova Antonio L. Avila-Marin Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers Case Studies in Thermal Engineering Volumetric receivers Central receiver system CFD simulations Concentrated solar power Homogeneous equivalent model Porous model |
| title | Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| title_full | Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| title_fullStr | Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| title_full_unstemmed | Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| title_short | Geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| title_sort | geometrical comparison of inline and staggered stack wire mesh absorbers for solar volumetric receivers |
| topic | Volumetric receivers Central receiver system CFD simulations Concentrated solar power Homogeneous equivalent model Porous model |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X2401760X |
| work_keys_str_mv | AT danielsanchezsenoran geometricalcomparisonofinlineandstaggeredstackwiremeshabsorbersforsolarvolumetricreceivers AT miguelareyesbelmonte geometricalcomparisonofinlineandstaggeredstackwiremeshabsorbersforsolarvolumetricreceivers AT michaelpkinzel geometricalcomparisonofinlineandstaggeredstackwiremeshabsorbersforsolarvolumetricreceivers AT marinacasanova geometricalcomparisonofinlineandstaggeredstackwiremeshabsorbersforsolarvolumetricreceivers AT antoniolavilamarin geometricalcomparisonofinlineandstaggeredstackwiremeshabsorbersforsolarvolumetricreceivers |