Application of CNT nanofluids in a turbulent flow heat exchanger
Nanofluids have received much attention since its discovery owing to its enhanced thermal conductivity and heat transfer characteristics which makes them a promising coolant in heat transfer application. In this study, the enhancement in heat transfer of carbon nanotube (CNT) nanofluids under turbul...
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| Format: | Article |
| Language: | English English |
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Taylor & Francis
2015
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| Online Access: | http://irep.iium.edu.my/42763/ http://irep.iium.edu.my/42763/1/Experimental_Nanoscience_2015b.pdf http://irep.iium.edu.my/42763/4/42763_Application%20of%20CNT%20nanofluids%20in%20a%20turbulent%20flow%20heat%20exchanger_Scopus.pdf |
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| author | Walvekar, Rashmi Siddiqui, Mohammad Khalid Ong, SeikSan Ismail, Ahmad Faris |
| author_facet | Walvekar, Rashmi Siddiqui, Mohammad Khalid Ong, SeikSan Ismail, Ahmad Faris |
| author_sort | Walvekar, Rashmi |
| building | IIUM Repository |
| collection | Online Access |
| description | Nanofluids have received much attention since its discovery owing to its enhanced thermal conductivity and heat transfer characteristics which makes them a promising coolant in heat transfer application. In this study, the enhancement in heat transfer of carbon nanotube (CNT) nanofluids under turbulent flow conditions is investigated experimentally. The CNT concentration was varied from 0.051 to 0.085 wt%, respectively. The nanofluid suspension was stabilised by gum arabic through a process of homogenisation and water bath sonication at 25'C. The flow rate of cold fluid (water) is varied from 1.7 to 3 L/min, while flow rate of the hot fluid is varied between 2 and 3.5 L/min. Thermal conductivity, density, and viscosity of the nanofluids are also measured as a function of
temperature and CNT concentration. The experimental results were validated with theoretical correlations for turbulent flow available in the literature. Results showed an enhancement in heat transfer between 9% and 67% as a function of temperature and CNT concentration. |
| first_indexed | 2025-11-14T16:03:41Z |
| format | Article |
| id | iium-42763 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T16:03:41Z |
| publishDate | 2015 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-427632017-04-03T03:53:17Z http://irep.iium.edu.my/42763/ Application of CNT nanofluids in a turbulent flow heat exchanger Walvekar, Rashmi Siddiqui, Mohammad Khalid Ong, SeikSan Ismail, Ahmad Faris TJ Mechanical engineering and machinery Nanofluids have received much attention since its discovery owing to its enhanced thermal conductivity and heat transfer characteristics which makes them a promising coolant in heat transfer application. In this study, the enhancement in heat transfer of carbon nanotube (CNT) nanofluids under turbulent flow conditions is investigated experimentally. The CNT concentration was varied from 0.051 to 0.085 wt%, respectively. The nanofluid suspension was stabilised by gum arabic through a process of homogenisation and water bath sonication at 25'C. The flow rate of cold fluid (water) is varied from 1.7 to 3 L/min, while flow rate of the hot fluid is varied between 2 and 3.5 L/min. Thermal conductivity, density, and viscosity of the nanofluids are also measured as a function of temperature and CNT concentration. The experimental results were validated with theoretical correlations for turbulent flow available in the literature. Results showed an enhancement in heat transfer between 9% and 67% as a function of temperature and CNT concentration. Taylor & Francis 2015-02 Article PeerReviewed application/pdf en http://irep.iium.edu.my/42763/1/Experimental_Nanoscience_2015b.pdf application/pdf en http://irep.iium.edu.my/42763/4/42763_Application%20of%20CNT%20nanofluids%20in%20a%20turbulent%20flow%20heat%20exchanger_Scopus.pdf Walvekar, Rashmi and Siddiqui, Mohammad Khalid and Ong, SeikSan and Ismail, Ahmad Faris (2015) Application of CNT nanofluids in a turbulent flow heat exchanger. Journal of Experimental Nanoscience, 11 (1). pp. 1-17. ISSN 17458080 http://www.tandfonline.com/loi/tjen20 10.1080/17458080.2015.1015461 |
| spellingShingle | TJ Mechanical engineering and machinery Walvekar, Rashmi Siddiqui, Mohammad Khalid Ong, SeikSan Ismail, Ahmad Faris Application of CNT nanofluids in a turbulent flow heat exchanger |
| title | Application of CNT nanofluids in a turbulent flow heat exchanger |
| title_full | Application of CNT nanofluids in a turbulent flow heat exchanger |
| title_fullStr | Application of CNT nanofluids in a turbulent flow heat exchanger |
| title_full_unstemmed | Application of CNT nanofluids in a turbulent flow heat exchanger |
| title_short | Application of CNT nanofluids in a turbulent flow heat exchanger |
| title_sort | application of cnt nanofluids in a turbulent flow heat exchanger |
| topic | TJ Mechanical engineering and machinery |
| url | http://irep.iium.edu.my/42763/ http://irep.iium.edu.my/42763/ http://irep.iium.edu.my/42763/ http://irep.iium.edu.my/42763/1/Experimental_Nanoscience_2015b.pdf http://irep.iium.edu.my/42763/4/42763_Application%20of%20CNT%20nanofluids%20in%20a%20turbulent%20flow%20heat%20exchanger_Scopus.pdf |