The effect of alumina/water nanofluid particle size on thermal conductivity

Tun-Ping Teng*, Yi-xuan Hong, Tun-Chien Teng, Huai-En Mo, How Gao Hsu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

275 引文 斯高帕斯(Scopus)

摘要

This study examines the effect of particle size, temperature, and weight fraction on the thermal conductivity ratio of alumina(Al2O 3)/water nanofluids. A Al2O3/water nanofluid produced by the direct synthesis method served as the experimental sample, and nanoparticles, each of a different nominal diameter (20, 50, and 100 nm), were dispersed into four different concentrations (0.5, 1.0, 1.5, and 2.0 wt%). This experiment measured the thermal conductivity of nanofluids with different particle sizes, weight fractions, and working temperatures (10, 30, 50 °C). The results showed a correlation between high thermal conductivity ratios and enhanced sensitivity, and small nanoparticle size and higher temperature. This research utilized experimental data to construct a new empirical equation, taking the nanoparticle size, temperature, and lower weight fraction of the nanofluid into consideration. Comparing the regression results with the experimental values, the margin of error was within -3.5% to +2.7%. The proposed empirical equation showed reasonably good agreement with our experimental results.

原文英語
頁(從 - 到)2213-2218
頁數6
期刊Applied Thermal Engineering
30
發行號14-15
DOIs
出版狀態已發佈 - 2010 十月 1

ASJC Scopus subject areas

  • 能源工程與電力技術
  • 工業與製造工程

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