期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 535, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physa.2019.122128
关键词
Curve-fitting method; Hybrid nano-lubricant; Thermal conductivity; Experimental data; Correlation development
资金
- Technical Innovation Project of Hubei Province [2017AAA133]
- Hubei Superior and Distinctive Discipline Group of Mechatronics and Automobiles [XKQ2018002]
Hybrid nanofluids has been attracted lots of attention due to simultaneous take advantage of the properties of two or more kinds of nanoparticles in the base fluid. Carbon Nanotubes (CNTs) are utilized widely attached to metal oxide nanoparticles due to significant thermal characteristics. This study aims to assess experimentally the thermal conductivity of the hybrid nanofluid of Zinc Oxide (ZnO) and Multi-Wall CNT (MWCNT) in Engine oil (SAE 10W40). The influences of nanoparticles concentration as well as fluid's temperature are evaluated. The experiments performed at the temperature between 25 degrees C and 50 degrees C and nanoparticles volume fraction from 0.05 to 0.8 %. The experimental results showed that a higher ratio of nano-lubricant thermal conductivity is achieved for a higher volume fraction and temperature of nanoparticles. According to the absence of an exact relationship to determine the thermal conductivity of ZnO-MWCNT/Engine oil, a correlation is developed based on the test measurements presented in terms of volume fraction and temperature using a curve-fitting method. A deviation analysis is also performed on the ratio of thermal conductivity achieved from the developed correlation and experimental data showing a reasonable agreement. (C) 2019 Elsevier B.V. All rights reserved.
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