Enhancement of thermal conductivity with al2o3 for nanofluids
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Published:
Oct 11, 2018
Keywords:
Alumina Nanofluids Thermal Conductivity TPS Sensor
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Abstract
The enhancement of the thermal conductivity of water in the presence of Alumina (Al2O3) using the employed surfactant, as the dispersant, is presented in this study. The volume concentration of Alumina–water nanofluids is below 0.2 vol.%. With the addition of dispersant and surfactant, the thermal conductivity of the produced nanofluids reveals a time-dependent characteristic. The thermal conductivity, considerably steady at the starting point of measurement, increases gradually with elapsed time. The results indicate that Alumina–water nanofluids with low concentration of nanoparticles have noticeably higher thermal conductivities than the water-base fluid without Alumina. For Al2O3 nanoparticles at a volume fraction of 0.001 (0.1 vol.%), thermal conductivity was enhanced by up to 18.4%.
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Jomphoak, A., Maturos, T., Pogfay, T., Karuwan, C., Tuantranont, A., & Onjun, T. (2018). Enhancement of thermal conductivity with al2o3 for nanofluids. Journal of Research and Applications in Mechanical Engineering, 1(1), 3–5. Retrieved from https://ph01.tci-thaijo.org/index.php/jrame/article/view/150227
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RESEARCH ARTICLES
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[19] Vadasz, J.J., Govender, S., Vadasz, P., 2005. Heat transfer enhancement innanofluids suspensions: possible mechanisms and explanations. Int. J. Heat Mass Transfer, Vol. 48, pp. 2673–2683.