VISCOSITY AND THERMAL CONDUCTIVITY MEASUREMENTS OF WATER-BASED NANOFLUIDS CONTAINING TITANIUM OXIDE NANOPARTICLES

被引：0
|
作者：
Fedele, L. [1 ]
Colla, L. [1 ]
Bobbo, S. [1 ]
机构：
[1] Ist Tecnol Costruz, Consiglio Nazl Ric, I-35127 Padua, Italy
来源：
23RD IIR INTERNATIONAL CONGRESS OF REFRIGERATION | 2011年 / 23卷
关键词：
HEAT-TRANSFER; BEHAVIOR; RHEOLOGY; TIO2;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Nanofluids, i.e. suspensions of nanoparticles in liquids, seem to be very promising as thermal vectors in systems where secondary fluids are applied. Here, the characterization of water-based nanofluids containing titanium oxide (TiO2) in concentrations ranging between 1 and 35 % in mass is presented. First of all, the mean nanoparticle diameters are studied by dynamic light scattering (DLS) technique and the nanofluid stability is analyzed by Zeta potential measurements. Then, the behaviour of viscosity as a function of composition and temperature was evaluated by means of a rheometer, in the temperature range between 283 K and 343 K. Furthermore, the thermal conductivity of these nanofluids was measured, in order to understand its possible enhancement as a function of temperature and nanoparticle concentration.
引用
收藏
页码：2211 / 2218
页数：8
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