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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2015
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iium-427652017-11-07T03:36:45Z http://irep.iium.edu.my/42765/ Experimental and numerical investigation of heat transfer in CNT nanofluids Rashmi, Walvekar Siddiqui, Mohammad Khalid Ismail, Ahmad Faris Saidur, R. Rashid, A. K. TJ Mechanical engineering and machinery TP Chemical technology 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 +-3:0%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density. Taylor & Francis 2015 Article PeerReviewed application/pdf en http://irep.iium.edu.my/42765/1/Experimental_Nanoscience2015a.pdf Rashmi, Walvekar and Siddiqui, Mohammad Khalid and Ismail, Ahmad Faris and Saidur, R. and Rashid, A. K. (2015) Experimental and numerical investigation of heat transfer in CNT nanofluids. Journal of Experimental Nanoscience, 10 (7). pp. 545-563. ISSN 1745-8099 http://www.tandfonline.com/loi/tjen20 10.1080/17458080.2013.848296 |
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Digital Repository |
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Local University |
| institution |
International Islamic University Malaysia |
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IIUM Repository |
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Online Access |
| language |
English |
| topic |
TJ Mechanical engineering and machinery TP Chemical technology |
| spellingShingle |
TJ Mechanical engineering and machinery TP Chemical technology Rashmi, Walvekar Siddiqui, Mohammad Khalid Ismail, Ahmad Faris Saidur, R. Rashid, A. K. Experimental and numerical investigation of heat transfer in CNT nanofluids |
| 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 +-3:0%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density. |
| format |
Article |
| author |
Rashmi, Walvekar Siddiqui, Mohammad Khalid Ismail, Ahmad Faris Saidur, R. Rashid, A. K. |
| author_facet |
Rashmi, Walvekar Siddiqui, Mohammad Khalid Ismail, Ahmad Faris Saidur, R. Rashid, A. K. |
| author_sort |
Rashmi, Walvekar |
| title |
Experimental and numerical
investigation of heat transfer in CNT
nanofluids |
| title_short |
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_sort |
experimental and numerical
investigation of heat transfer in cnt
nanofluids |
| publisher |
Taylor & Francis |
| publishDate |
2015 |
| url |
http://irep.iium.edu.my/42765/ http://irep.iium.edu.my/42765/ http://irep.iium.edu.my/42765/ http://irep.iium.edu.my/42765/1/Experimental_Nanoscience2015a.pdf |
| first_indexed |
2023-09-18T21:00:56Z |
| last_indexed |
2023-09-18T21:00:56Z |
| _version_ |
1777410618903494656 |