Heat transfer enhancement using Al2O3–water nanofluid for an electronic liquid cooling system
ABSTRACT We have experimentally investigated the behaviour and heat transfer enhancement of a particular nanofluid, Al2O3 nanoparticle–water mixture, flowing inside a closed system that is destined for cooling of microprocessors or other electronic components. Experimental data, obtained for turbulent flow regime, have clearly shown that the inclusion of nanoparticles into distilled water has produced a considerable enhancement of the cooling block convective heat transfer coefficient. For a particular nanofluid with 6.8% particle volume concentration, heat transfer coefficient has been found to increase as much as 40% compared to that of the base fluid. It has also been found that an increase of particle concentration has produced a clear decrease of the heated component temperature. Experimental data have clearly shown that nanofluid with 36 nm particle diameter provides higher heat transfer coefficients than the ones of nanofluid with 47 nm particle size.
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ABSTRACT: Effects of mass concentration of titanium dioxide nanoparticles (TiO2 NPs) and cooling rate on the solidification of water-based nanofluids (NFs) were studied by differential scanning calorimetry (DSC). At a given cooling rate, the phase transition temperature, phase transition time and enthalpy of the NFs first increased and then decreased as mass concentration of TiO2 NPs increased, and the effect was more significant at low cooling rates than at high cooling rates. Mechanisms for these phenomena were analyzed.International Journal of Heat and Mass Transfer 04/2013; 59:29-34. DOI:10.1016/j.ijheatmasstransfer.2012.11.044 · 2.52 Impact Factor
Heat Transfer Enhancement with Nanofluids, Edited by Vincenzo Bianco, Oronzio Manca, Sergio Nardini, Kambiz Vafai, 04/2015: chapter 8; CRC Press., ISBN: 9781482254006
Chemical Engineering and Processing 10/2013; 72:103-112. DOI:10.1016/j.cep.2013.07.002 · 1.96 Impact Factor