Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids
This study conducts a numerical comparison of the thermal performance of three distinct working fluids (pure water, TiO2, and SiO2 water-based nanofluids) within an evacuated tube solar collector using Computational Fluid Dynamics. The study evaluates thermohydraulic performance alongside global and...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-04-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024053404 |
| _version_ | 1797214903565549568 |
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| author | Oscar A. López-Núñez F. Lara A. González-Angeles A. Cardenas-Robles J.J. Ramírez-Minguela J. Arturo Alfaro-Ayala |
| author_facet | Oscar A. López-Núñez F. Lara A. González-Angeles A. Cardenas-Robles J.J. Ramírez-Minguela J. Arturo Alfaro-Ayala |
| author_sort | Oscar A. López-Núñez |
| collection | DOAJ |
| description | This study conducts a numerical comparison of the thermal performance of three distinct working fluids (pure water, TiO2, and SiO2 water-based nanofluids) within an evacuated tube solar collector using Computational Fluid Dynamics. The study evaluates thermohydraulic performance alongside global and local entropy generation rates, while considering variations in solar radiation values and inlet mass flow rates. Results indicate that nanofluids demonstrate superior performance under low solar radiation, exhibiting higher outlet temperatures, velocities, thermal efficiency, and exergy efficiency compared to pure water. However, at the higher solar radiation level, the efficiency of SiO2 water-based nanofluid diminishes due to its impact on specific heat. Furthermore, the entropy generation analysis reveals significant reductions with TiO2 water-based nanofluid in all the phenomena considered (up to 79 %). The SiO2 nanofluid performance aligns closely with pure water under high radiation value. This investigation offers valuable insights into the utilization of nanofluids in solar collectors across diverse operating conditions, emphasizing their pivotal role in enhancing overall performance. |
| first_indexed | 2024-04-24T11:21:34Z |
| format | Article |
| id | doaj.art-8bb9532a6cb548b78ea7367c97d6fc37 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-24T11:21:34Z |
| publishDate | 2024-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-8bb9532a6cb548b78ea7367c97d6fc372024-04-11T04:41:39ZengElsevierHeliyon2405-84402024-04-01108e29309Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluidsOscar A. López-Núñez0F. Lara1A. González-Angeles2A. Cardenas-Robles3J.J. Ramírez-Minguela4J. Arturo Alfaro-Ayala5Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, Mexico; Corresponding author.Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, MexicoFacultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, MexicoFacultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, MexicoDepartment of Chemical Engineering, University of Guanajuato, DCNE, Col. Noria Alta s/n, C.P. 36050, Guanajuato, Gto, MexicoDepartment of Chemical Engineering, University of Guanajuato, DCNE, Col. Noria Alta s/n, C.P. 36050, Guanajuato, Gto, MexicoThis study conducts a numerical comparison of the thermal performance of three distinct working fluids (pure water, TiO2, and SiO2 water-based nanofluids) within an evacuated tube solar collector using Computational Fluid Dynamics. The study evaluates thermohydraulic performance alongside global and local entropy generation rates, while considering variations in solar radiation values and inlet mass flow rates. Results indicate that nanofluids demonstrate superior performance under low solar radiation, exhibiting higher outlet temperatures, velocities, thermal efficiency, and exergy efficiency compared to pure water. However, at the higher solar radiation level, the efficiency of SiO2 water-based nanofluid diminishes due to its impact on specific heat. Furthermore, the entropy generation analysis reveals significant reductions with TiO2 water-based nanofluid in all the phenomena considered (up to 79 %). The SiO2 nanofluid performance aligns closely with pure water under high radiation value. This investigation offers valuable insights into the utilization of nanofluids in solar collectors across diverse operating conditions, emphasizing their pivotal role in enhancing overall performance.http://www.sciencedirect.com/science/article/pii/S2405844024053404TiO2 nanofluidEntropy generationNumerical modelComputational fluid dynamics |
| spellingShingle | Oscar A. López-Núñez F. Lara A. González-Angeles A. Cardenas-Robles J.J. Ramírez-Minguela J. Arturo Alfaro-Ayala Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids Heliyon TiO2 nanofluid Entropy generation Numerical model Computational fluid dynamics |
| title | Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| title_full | Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| title_fullStr | Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| title_full_unstemmed | Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| title_short | Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| title_sort | assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids |
| topic | TiO2 nanofluid Entropy generation Numerical model Computational fluid dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024053404 |
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