Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1016/j.ijheatmasstransfer.2016.06.071
Ключевые слова: Nanofluids, Turbulent heat transfer, Forced convection, Thermal conductivity, Viscosity, Pressure drop, Nanoparticle size, Drops, Heat transfer, Heat transfer coefficients, Nanoparticles, Reynolds number, Average heat transfers, Experiment investigation, Nanoparticle concentrations, Nanoparticle sizes, Particles concentration, Turbulent forced convection, Nanofluidics
Аннотация: The experiment investigation of turbulent forced convection of nanofluids with SiO2 and Al2O3 nanoparticles was carried out. Nanoparticle concentration varied in the range from 0.5 to 2 vol.% in the experiments. The nanoparticle size ranged from 10 to 100 nm. The dependence of heat transfer coefficient and pressure drop from the concentration, size, material of the nanoparticles and temperature was studied. It was shown that adding nanoparticles to the coolant significantly influences the heat transfer coefficient in the turbulent flow regime. It is shown that with increasing nanoparticles concentration, the local and average heat transfer coefficients at a fixed Reynolds number increase. Decrease in heat transfer coefficient with increasing particles concentration may take place at a fixed flow rate. It is shown that, the heat transfer coefficient of the nanofluid in turbulent regime increases with increasing nanoparticles size at a fixed flow rate, while has a certain maximum at a fixed Reynolds number. The effect of nanoparticles material on the heat transfer coefficient and pressure loss has been also demonstrated. It is found that the inlet temperature is another factor having a significant effect on turbulent heat transfer performance of nanofluids. (C) 2016 Elsevier Ltd. All rights reserved.
Журнал: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Выпуск журнала: Vol. 102
Номера страниц: 745-755
ISSN журнала: 00179310
Место издания: OXFORD
Издатель: PERGAMON-ELSEVIER SCIENCE LTD
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