Abstract




 
   

IJE TRANSACTIONS C: Aspects Vol. 27, No. 3 (March 2014) 411-416   

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  AN EXPERIMENTAL STUDY ON THE THERMAL CONDUCTIVITY OF CARBON NANOTUBES/OIL (TECHNICAL NOTE)
 
M. S. Gohari, T. Ebadzadeh, A. M. Rashidi and M. Tajik Jamal-Abad
 
( Received: June 13, 2013 – Accepted: August 22, 2013 )
 
 

Abstract    [if gte mso 9]> In the present work, the thermal conductivity coefficients of nanoparticle-oil suspensions for two types of carbon nanotubes, single-walled (SWNTs) and multi-walled (MWNTs) carbon nanotubes at 0.1, 0.2 and 0.3 wt.% were measured by a modified transient hot wire method (KD2-pro thermal property meter). Results showed that the thermal conductivity of suspension containing single-walled carbon nanotubes is higher than that of suspension containing multi-walled carbon nanotubes. It was also observed that the thermal conductivity coefficients of both nanofluids increase with increasing temperature.

 

Keywords    CNTs, nanofluid, thermal conductivity

 

چکیده    درکار حاضر، ضرایب هدایت حرارتی سوسپانسیون های نانو ذره-روغن برای دو نوع نانو تیوب کربنی تک دیواره و چند دیواره در درصد های وزنی 1/0، 2/0 و3/0 با روش سیم داغ اصلاح شده (D2-pro thermal property meter) اندازه گیری شد. نتایج نشان داد که هدایت حرارتی سوسپانسیون حاوی نانو لوله های کربنی تک دیواره بیشتر از نانو لوله های کربنی چند دیواره است. همچنین مشاهده شد که ضرایب هدایت حرارتی هر دو نانو سیال با افزایش دما افزایش پیدا می کند..

References   

1.     Zhu, D., Li, X., Wang, N., Wang, X., Gao, J., and Li, H., "Dispersion behavior and thermal conductivity characteristics of Al2O3–H2O nanofluids", Current Applied Physics,  Vol. 9, No. 1, (2009), 131-139.

2.     Xuan, Y. and Li, Q., "Heat transfer enhancement of nanofluids", International Journal of Heat and Fluid Flow,  Vol. 21, No. 1, (2000), 58-64.

3.     Yu W, Choi S. U. S and J, D., Temperature and concentration dependence of effective thermal conductivities of alumina oil based nanofluids, in ECI Conference on Nanofluids: Fundamental and Application Copper Mountain. Colorado. (2007)

4.     Jamal-Abadi, M. T. and Zamzamian, A., "Thermal conductivity of Cu and A-water nanofluids", International Journal of Engineering (1025-2495),  Vol. 26, No. 8, (2013).

5.     Wen, D. and Ding, Y., "Experimental investigation into convective heat transfer of nanofluids at the entrance region under laminar flow conditions", International Journal of Heat and Mass Transfer,  Vol. 47, No. 24, (2004), 5181-5188.

6.     Li, Q., Xuan, Y. and Wang, J., "Investigation on convective heat transfer and flow features of nanofluids", Journal of Heat Transfer,  Vol. 125, No., (2003), 151-155.

7.     Choi, S., Zhang, Z., Yu, W., Lockwood, F. and Grulke, E., "Anomalous thermal conductivity enhancement in nanotube suspensions", Applied Physics Letters,  Vol. 79, No. 14, (2001), 2252-2254.

8.     Xie, H., Lee, H., Youn, W. and Choi, M., "Nanofluids containing multiwalled carbon nanotubes and their enhanced thermal conductivities", Journal of Applied Physics,  Vol. 94, No. 8, (2003), 4967-4971.

9.     Assael, M., Chen, C.-F., Metaxa, I. and Wakeham, W., "Thermal conductivity of suspensions of carbon nanotubes in water", International Journal of Thermophysics,  Vol. 25, No. 4, (2004), 971-985.

10.   Assael, M., Metaxa, I., Arvanitidis, J., Christofilos, D. and Lioutas, C., "Thermal conductivity enhancement in aqueous suspensions of carbon multi-walled and double-walled nanotubes in the presence of two different dispersants", International Journal of Thermophysics,  Vol. 26, No. 3, (2005), 647-664.

11.   Wen, D. and Ding, Y., "Effective thermal conductivity of aqueous suspensions of carbon nanotubes (carbon nanotube nanofluids)", Journal of Thermophysics and Heat Transfer,  Vol. 18, No. 4, (2004), 481-485.

12.   Phuoc, T. X., Massoudi, M. and Chen, R.-H., "Viscosity and thermal conductivity of nanofluids containing multi-walled carbon nanotubes stabilized by chitosan", International Journal of Thermal Sciences,  Vol. 50, No. 1, (2011), 12-18.

13.   Nieto de Castro, C., Murshed, S., Lourenço, M., Santos, F., Lopes, M., and França, J., "Enhanced thermal conductivity and specific heat capacity of carbon nanotubes ionanofluids", International Journal of Thermal Sciences,  Vol. 62, No., (2012), 34-39.

14.   Rashidi, A., Akbarnejad, M., Khodadadi, A., Mortazavi, Y. and Ahmadpourd, A., "Single-wall carbon nanotubes synthesized using organic additives to Co–Mo catalysts supported on nanoporous MgO", Nanotechnology,  Vol. 18, No. 31, (2007), 315605.

15.   Hagen, K. D., "Heat transfer with applications", Prentice Hall Englewood Cliffs, NJ,  (1999).

16.   Berber, S., Kwon, Y.-K. and Tomanek, D., "Unusually high thermal conductivity of carbon nanotubes", Physical Review Letters,  Vol. 84, No. 20, (2000), 4613.

17.   Suzuki, T. O., D, "Intermolecular energy transfer at a solid-liquid interface", Microscale Thermophysical Engineering,  Vol. 4, No. 3, (2000), 189-196.  


 





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