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Research on Thermophysical Properties of Nanoliquids Based on SiO2 Nanoparticles for Use as a Heat-Transfer Medium in Solar-Thermal Converters

J. S. AkhatovPhysical and Technical Institute Physics of the Sun, Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanS. Z. MirzaevInstitute of Ion-Plasma and Laser Technologies, Academy of Science of the Republic of Uzbekistan, Tashkent, UzbekistanZhiyong WuSolar Energy Laboratory, Institute of Electrical Engineering CAS, Beijing, ChinaS. S. TelyaevSolar Energy Laboratory, Institute of Electrical Engineering CAS, Beijing, ChinaE. T. ZhuraevPhysical and Technical Institute Physics of the Sun, Academy of Sciences of the Republic of Uzbekistan, Tashkent, UzbekistanT. I. ZhuraevPhysical and Technical Institute Physics of the Sun, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan

Applied Solar Energyjournal2018en

ABI

Annotatsiya

This paper presents an analysis of the modern state of studies of the thermophysical properties of nanofluids and the heat-transfer mechanism in them. The results of experimental studies of obtaining and determining the dynamic viscosity of the nanofluids (SiO2 + water) with various concentrations of nanoparticles are given. Nanofluids are obtained using a two-stage method in an ultrasonic field with a frequency of 20 kHz. It is shown that, in the SiO2 + water system, nanoparticles with sizes of 7, 12, and 16 nm are most stable. Various SiO2 concentrations in the volume range 0.5–5% were tested, and their thermophysical properties were studied for the purpose of using them as a heat-transfer medium in flat-plate solar collectors.

Hali tarjima qilinmagan

Mavzular

Nanofluid Flow and Heat Transfer Coal Combustion and Slurry Processing Solar Thermal and Photovoltaic Systems

Identifikatorlar

DOI: 10.3103/s0003701x18010024

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