Experimental and numerical investigation of heat transfer in CNT nanofluids
Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The...
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| Format: | Article |
| Language: | English |
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Taylor & Francis
2013
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| Online Access: | http://irep.iium.edu.my/36777/ http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf |
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| author | Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. |
| author_facet | Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. |
| author_sort | Rashmi, W. |
| building | IIUM Repository |
| collection | Online Access |
| description | Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The flow rate of cold fluid varied from 10 to 50 g/s. Both experimental and numerical simulations were carried out to determine the heat transfer enhancement using CNT nanofluids. Computational fluid dynamics (CFD) simulations were carried out using Fluent v 6.3 by assuming single-phase approximation. Thermal conductivity, density and rheology of the nanofluid were also measured as a function of temperature. The results showed thermal conductivity enhancement from 4% to 125% and nearly 70% enhancement in heat transfer with increase in flow rate. Numerical results exhibited good agreement with the experimental results with a deviation of 3%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density. |
| first_indexed | 2025-11-14T15:47:14Z |
| format | Article |
| id | iium-36777 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:47:14Z |
| publishDate | 2013 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-367772020-11-05T01:15:01Z http://irep.iium.edu.my/36777/ Experimental and numerical investigation of heat transfer in CNT nanofluids Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The flow rate of cold fluid varied from 10 to 50 g/s. Both experimental and numerical simulations were carried out to determine the heat transfer enhancement using CNT nanofluids. Computational fluid dynamics (CFD) simulations were carried out using Fluent v 6.3 by assuming single-phase approximation. Thermal conductivity, density and rheology of the nanofluid were also measured as a function of temperature. The results showed thermal conductivity enhancement from 4% to 125% and nearly 70% enhancement in heat transfer with increase in flow rate. Numerical results exhibited good agreement with the experimental results with a deviation of 3%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density. Taylor & Francis 2013-10-18 Article PeerReviewed application/pdf en http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf Rashmi, W. and Khalid, M. and Ismail, Ahmad Faris and Saidur, R. and Rashid, A. K. (2013) Experimental and numerical investigation of heat transfer in CNT nanofluids. Journal of Experimental Nanoscience, 10 (7). pp. 1-19. ISSN 1745-8099 http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.848296 10.1080/17458080.2013.848296 |
| spellingShingle | TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title | Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title_full | Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title_fullStr | Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title_full_unstemmed | Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title_short | Experimental and numerical investigation of heat transfer in CNT nanofluids |
| title_sort | experimental and numerical investigation of heat transfer in cnt nanofluids |
| topic | TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering |
| url | http://irep.iium.edu.my/36777/ http://irep.iium.edu.my/36777/ http://irep.iium.edu.my/36777/ http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf |