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首页> 外文期刊>International Journal of Heat and Mass Transfer >Stability, thermo-physical properties, and electrical conductivity of graphene oxide-deionized water/ethylene glycol based nanofluid
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Stability, thermo-physical properties, and electrical conductivity of graphene oxide-deionized water/ethylene glycol based nanofluid

机译：氧化石墨烯去离子水/乙二醇基纳米流体的稳定性，热物理性质和电导率

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摘要

Stability, thermal conductivity, viscosity, specific heat, density and electrical conductivity of graphene oxide nanosheets-(60:40) deionized water/ethylene glycol (GONs-DW/EG) were experimentally examined. The stability of the nanofluids is examined with sedimentation time. Experiments were carried out with a weight fraction of (0.01-0.10)% and different temperatures. Nanofluids were found to be stable for more than 2 months. The thermal conductivity is improved by 6.67-10.47% at a weight fraction of 0.10% and temperature of (25-45) ℃. The nanofluids showed a shear thinning behavior at low shear rate; however, it behaved in Newtonian manner with higher shear rate. The viscosity of 0.10 wt,% GONs-DW/EG nanofluid is increased by 35% compared to the base fluid at a temperature of 20 ℃. However, it decreased by 48% with increasing the temperature from 20 to 60 ℃ for the same loading of GONs. The specific heat of the GONs-DW/EG nanofluid increased by 3.59-5.28% with a weight fraction of 0.05% and decreased by 9.05-8.215% with a weight fraction of 0.10% with temperature range of 20-60 ℃. The density of the GONs-DW/EG nanofluid at weight fraction of 0.10% is decreased by 1.134-1% with temperature of 25-45 ℃. An improvement in electrical conductivity of about 1664% is achieved at a weight fraction of 0.10% and temperature of 25 ℃. Correlations were developed for predicting thermo-physical properties and electrical conductivity of the nanofluids based on the experimental data.
机译：实验研究了氧化石墨烯纳米片-（60:40）去离子水/乙二醇（GONs-DW / EG）的稳定性，热导率，粘度，比热，密度和电导率。用沉降时间检查纳米流体的稳定性。在重量分数为（0.01-0.10）％和不同温度下进行实验。发现纳米流体稳定超过2个月。在重量分数为0.10％和温度为（25-45）℃时，导热系数提高6.67-10.47％。纳米流体在低剪切速率下显示出剪切稀化行为。然而，它以牛顿方式表现出较高的剪切速率。在20℃的温度下，与基础流体相比，0.10 wt％的GONs-DW / EG纳米流体的粘度增加了35％。然而，在相同的GON加载量下，温度从20℃升高到60℃，它降低了48％。在20-60℃的温度范围内，GONs-DW / EG纳米流体的比热增加3.59-5.28％（重量分数为0.05％），降低9.05-8.215％（重量分数为0.10％）。温度为25-45℃时，重量分数为0.10％的GONs-DW / EG纳米流体的密度降低了1.134-1％。在重量分数为0.10％和温度为25℃的情况下，电导率可提高约1664％。基于实验数据，开发了用于预测纳米流体的热物理性质和电导率的相关性。

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  • 作者

    Ali Ijam; R. Saidur; P. Ganesan; A. Moradi Golsheikh;

  • 作者单位

    Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Centre of Research Excellence in Renewable Energy (CoRE-RE), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Kingdom of Saudi Arabia;

    Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Low Dimensional Materials Research Centre (LDMRC), Physics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    GONs-DW/EG nanofluid; Stability; Thermo-physical properties and electrical; conductivity;

    机译：GONs-DW / EG纳米流体;稳定性;热物理性质和电性;电导率;

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