Abstract

The thermal conductivity (TC) of DWCNT/EG nanofluid at the temperature range of 30–50 °C and solid volume fraction (SVF) range of 0.055–0.92% was investigated. The results showed that the enhancement of SVF at 50 °C increases TC up to 35.37%. Experimental data obtained for this nanofluid were compared with experimental results of SWCNT/EG, DWCNT–ZnO/EG–water (40:60), MWCNT–ZnO (50:50)/EG–water (50:50) and SWCNT–ZnO (30:70)/EG–water (60:40). Using experimental data, a correlation was proposed for the prediction of TC with R² (regression coefficient) and maximum correlation error of 0.993687% and 2%, respectively. Nanofluid sensitivity analysis showed that in higher SVFs, the increment of sensitivity relative to temperature is higher than in lower SVFs.

Graphic Abstract

中文翻译：

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含DWCNT的基于EG的纳米流体的比较热分析

摘要

研究了DWCNT / EG纳米流体在30–50°C的温度范围和固体体积分数（SVF）的0.055-0.92％范围内的热导率（TC）。结果表明，在50°C时SVF的增强使TC升高至35.37％。将该纳米流体获得的实验数据与SWCNT / EG，DWCNT–ZnO / EG–水（40:60），MWCNT–ZnO（50:50）/ EG–水（50:50）和SWCNT–ZnO的实验结果进行了比较（30:70）/ EG-水（60:40）。利用实验数据，提出了以R ²（回归系数）和最大相关误差分别为0.993687％和2％进行TC预测的相关性。纳米流体敏感性分析表明，在较高的SVF中，相对于温度的敏感性增量要高于较低的SVF。

图形摘要