Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts
The compound technique that combines nanofluids with wire coil inserts has proven itself in achieving double augmentation in heat transfer. This paper presents the thermal hydraulic performance of TiO2-SiO2 nanofluids with wire coil inserts. The experiments were conducted for Reynolds number from 23...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2019
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/24393/1/Heat%20transfer%20performance.pdf |
| _version_ | 1796993269366784000 |
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| author | K., Abdul Hamid Azmi, W. H. R., Mamat Sharma, K. V. |
| author_facet | K., Abdul Hamid Azmi, W. H. R., Mamat Sharma, K. V. |
| author_sort | K., Abdul Hamid |
| collection | UMP |
| description | The compound technique that combines nanofluids with wire coil inserts has proven itself in achieving double augmentation in heat transfer. This paper presents the thermal hydraulic performance of TiO2-SiO2 nanofluids with wire coil inserts. The experiments were conducted for Reynolds number from 2300 to 12,000 to determine the heat transfer performance and friction factor of TiO2-SiO2nanofluids with wire coil inserts. The TiO2-SiO2 nanofluids were prepared by using the two-step method for volume concentrations of 0.5–3.0%. The wire coil inserts are designed at various ratios of pitch over diameter (P/D) in the range of 0.83–4.17. The heat transfer performance of nanofluids was enhanced for a maximum of 254.4%, while the friction factor was obtained in the range of 1.76–6.38 times higher than water/EG in a plain tube. The thermal performance factor (TPF), η for the nanofluids with wire coil inserts at all volume concentrations was observed greater than 1.0. The optimum performance of TiO2-SiO2 nanofluids with wire coil occurred at 2.5% volume concentration and 1.50 pitch ratio. At this condition, the TiO2-SiO2 nanofluids with wire coil inserts provide the highest TPF and represent the best condition for cooling system applications. |
| first_indexed | 2024-03-06T12:31:34Z |
| format | Article |
| id | UMPir24393 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:31:34Z |
| publishDate | 2019 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir243932019-03-19T08:48:01Z http://umpir.ump.edu.my/id/eprint/24393/ Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts K., Abdul Hamid Azmi, W. H. R., Mamat Sharma, K. V. TJ Mechanical engineering and machinery The compound technique that combines nanofluids with wire coil inserts has proven itself in achieving double augmentation in heat transfer. This paper presents the thermal hydraulic performance of TiO2-SiO2 nanofluids with wire coil inserts. The experiments were conducted for Reynolds number from 2300 to 12,000 to determine the heat transfer performance and friction factor of TiO2-SiO2nanofluids with wire coil inserts. The TiO2-SiO2 nanofluids were prepared by using the two-step method for volume concentrations of 0.5–3.0%. The wire coil inserts are designed at various ratios of pitch over diameter (P/D) in the range of 0.83–4.17. The heat transfer performance of nanofluids was enhanced for a maximum of 254.4%, while the friction factor was obtained in the range of 1.76–6.38 times higher than water/EG in a plain tube. The thermal performance factor (TPF), η for the nanofluids with wire coil inserts at all volume concentrations was observed greater than 1.0. The optimum performance of TiO2-SiO2 nanofluids with wire coil occurred at 2.5% volume concentration and 1.50 pitch ratio. At this condition, the TiO2-SiO2 nanofluids with wire coil inserts provide the highest TPF and represent the best condition for cooling system applications. Elsevier Ltd 2019 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24393/1/Heat%20transfer%20performance.pdf K., Abdul Hamid and Azmi, W. H. and R., Mamat and Sharma, K. V. (2019) Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts. Applied Thermal Engineering, 152. pp. 275-286. ISSN 1359-4311. (Published) https://doi.org/10.1016/j.applthermaleng.2019.02.083 https://doi.org/10.1016/j.applthermaleng.2019.02.083 |
| spellingShingle | TJ Mechanical engineering and machinery K., Abdul Hamid Azmi, W. H. R., Mamat Sharma, K. V. Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title | Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title_full | Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title_fullStr | Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title_full_unstemmed | Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title_short | Heat transfer performance of TiO2-SiO2 nanofluids in a tube with wire coil inserts |
| title_sort | heat transfer performance of tio2 sio2 nanofluids in a tube with wire coil inserts |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/24393/1/Heat%20transfer%20performance.pdf |
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