Measurement of the Thermal Conductivity and Heat Transfer Coefficient of Nanofluids with Single-Walled Nanotubes

被引：1
|
作者：
Rudyak, V. Ya. [1 ,2 ,3 ,4 ]
Minakov, A. V. [1 ,2 ,3 ]
Pryazhnikov, M. I. [1 ,2 ,3 ]
Guzey, D. V. [1 ,2 ]
机构：
[1] Novosibirsk State Univ Architecture & Civil Engn, Novosibirsk, Russia
[2] Siberian Fed Univ, Krasnoyarsk, Russia
[3] Russian Acad Sci, Inst Thermophys, Siberian Branch, Novosibirsk, Russia
[4] Novosibirsk State Univ, Novosibirsk, Russia
来源：
HIGH TEMPERATURE | 2022年 / 60卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
MULTIWALLED CARBON NANOTUBES; AQUEOUS SUSPENSIONS; VISCOSITY; ENHANCEMENT; WATER; FLOW;
D O I：
10.1134/S0018151X22030026
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This article is devoted to the experimental study of thermal conductivity and heat transfer of nanofluids with single-walled nanotubes. The thermal conductivity of nanofluids based on ethylene glycol, water, and isopropyl alcohol has been measured. The weight concentration of carbon tubes varied from 0.05 to 0.5%. It is shown that in all cases the thermal conductivity of nanofluids increases significantly. For example, for a nanofluid based on isopropyl alcohol at a weight concentration of 0.05%, the excess of the thermal conductivity compared to the base liquid was 10.5% and at a concentration of 0.25 it was 51%. The results of measuring the heat transfer coefficient of a nanofluid based on isopropyl alcohol in a cylindrical channel are presented. The heat transfer coefficient of the nanofluid also has high values: at a tubes concentration of 0.25%, the heat transfer coefficient is 1.5 times higher than that of the base liquid. Along with the heat transfer coefficient, the pressure drop in the channel has been systematically studied, for which the viscosity of the nanofluids used has been previously studied.
引用
收藏
页码：631 / 638
页数：8
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