Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape
This paper presents an experimental and numerical study to investigate the heat transfer enhancement in a horizontal circular tube using hybrid nanofluid (CuO, Al₂O₃/ distilled water) and fitted with twisted tape (typical twisted tape, with twist ratios (TR=9.2). Under fully developed turbulent flow...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2023-01-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_175623_1272eea70ee5f0308fa496f44d084b6b.pdf |
| _version_ | 1827367774960222208 |
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| author | Noor Hamza Sattar Aljabair |
| author_facet | Noor Hamza Sattar Aljabair |
| author_sort | Noor Hamza |
| collection | DOAJ |
| description | This paper presents an experimental and numerical study to investigate the heat transfer enhancement in a horizontal circular tube using hybrid nanofluid (CuO, Al₂O₃/ distilled water) and fitted with twisted tape (typical twisted tape, with twist ratios (TR=9.2). Under fully developed turbulent flow and uniform heat flux conditions, the studied hybrid nanofluid concentrations are (=0.6, 1.22, and 1.8% by volume). The experimental test rig includes all the required instruments to study the heat transfer enhancement. All the tests were carried out with a Reynolds number range of 3560-8320 and uniform heat flux (13217.5 W/m². The twisted tape, manufactured from polylactic acid (PLA) by 3-dimensional printer technology, was inserted inside the tube. In this numerical study, the finite volume method (CFD) procedure was employed to pattern the forced convection turbulent flow through the tube. For hybrid nanofluid with twisted, the maximum enhancement in the maximum thermal performance factor was 2.18 for φ = 1.8%, while for a tube (water with twisted) under the same conditions, it was (2.04). A high Nusselt number was obtained with a concentration of 1.8% and an enhancement in the heat transfer of about 6.70%) than water. |
| first_indexed | 2024-03-08T09:17:36Z |
| format | Article |
| id | doaj.art-e00e2203e0314897b19006280c49a42e |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T09:17:36Z |
| publishDate | 2023-01-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-e00e2203e0314897b19006280c49a42e2024-01-31T14:15:47ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582023-01-01411698510.30684/etj.2022.131909.1069175623Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted TapeNoor Hamza0Sattar Aljabair1mechanical department , university of technologyUniversity of Technology-IraqThis paper presents an experimental and numerical study to investigate the heat transfer enhancement in a horizontal circular tube using hybrid nanofluid (CuO, Al₂O₃/ distilled water) and fitted with twisted tape (typical twisted tape, with twist ratios (TR=9.2). Under fully developed turbulent flow and uniform heat flux conditions, the studied hybrid nanofluid concentrations are (=0.6, 1.22, and 1.8% by volume). The experimental test rig includes all the required instruments to study the heat transfer enhancement. All the tests were carried out with a Reynolds number range of 3560-8320 and uniform heat flux (13217.5 W/m². The twisted tape, manufactured from polylactic acid (PLA) by 3-dimensional printer technology, was inserted inside the tube. In this numerical study, the finite volume method (CFD) procedure was employed to pattern the forced convection turbulent flow through the tube. For hybrid nanofluid with twisted, the maximum enhancement in the maximum thermal performance factor was 2.18 for φ = 1.8%, while for a tube (water with twisted) under the same conditions, it was (2.04). A high Nusselt number was obtained with a concentration of 1.8% and an enhancement in the heat transfer of about 6.70%) than water.https://etj.uotechnology.edu.iq/article_175623_1272eea70ee5f0308fa496f44d084b6b.pdfhybrid nanofluidturbulent flowcfdheat transfertypical twisted tapethermal performance factor |
| spellingShingle | Noor Hamza Sattar Aljabair Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape Engineering and Technology Journal hybrid nanofluid turbulent flow cfd heat transfer typical twisted tape thermal performance factor |
| title | Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape |
| title_full | Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape |
| title_fullStr | Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape |
| title_full_unstemmed | Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape |
| title_short | Numerical and Experimental Investigation of Heat Transfer Enhancement by Hybrid Nanofluid and Twisted Tape |
| title_sort | numerical and experimental investigation of heat transfer enhancement by hybrid nanofluid and twisted tape |
| topic | hybrid nanofluid turbulent flow cfd heat transfer typical twisted tape thermal performance factor |
| url | https://etj.uotechnology.edu.iq/article_175623_1272eea70ee5f0308fa496f44d084b6b.pdf |
| work_keys_str_mv | AT noorhamza numericalandexperimentalinvestigationofheattransferenhancementbyhybridnanofluidandtwistedtape AT sattaraljabair numericalandexperimentalinvestigationofheattransferenhancementbyhybridnanofluidandtwistedtape |