An Experimental Study on Nanofluids Convective Heat Transfer Through a Straight Tube under Constant Heat Flux

doi:10.1016/S1004-9541(13)60618-7

Abstract

Abstract: In this work, the laminar convective heat transfer performance and the pressure drop of water-based nanofluids containing Al₂O₃, TiO₂ and SiO₂ nanoparticles flowing through a straight circular tube were experimentally investigated. The experimental results showed that addition of small amounts of nano-sized Al₂O₃ and TiO₂ particles to de-ionized water increased heat transfer coefficients considerably, while the SiO₂ nanofluids showed the opposite behavior attracting the authors' interests. An average of 16% and 8.2% increase in heat transfer coefficient were observed with the average of 28% and 15% penalty in pressure drop for Al₂O₃ and TiO₂ nanofluids.

Key words: convection, forced convection, heat transfer, nanoparticles, nanofluids

摘要： In this work, the laminar convective heat transfer performance and the pressure drop of water-based nanofluids containing Al₂O₃, TiO₂ and SiO₂ nanoparticles flowing through a straight circular tube were experimentally investigated. The experimental results showed that addition of small amounts of nano-sized Al₂O₃ and TiO₂ particles to de-ionized water increased heat transfer coefficients considerably, while the SiO₂ nanofluids showed the opposite behavior attracting the authors' interests. An average of 16% and 8.2% increase in heat transfer coefficient were observed with the average of 28% and 15% penalty in pressure drop for Al₂O₃ and TiO₂ nanofluids.

关键词: convection, forced convection, heat transfer, nanoparticles, nanofluids

Ahmad Azari, Mansour Kalbasi, Masoud Derakhshandeh, Masoud Rahimi. An Experimental Study on Nanofluids Convective Heat Transfer Through a Straight Tube under Constant Heat Flux[J]. Chin.J.Chem.Eng., 2013, 21(10): 1082-1088.

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