Scholarlink

<p>This article main aim is to propose new heat transfer fluids having polyethylene glycol mixtures or PEG 200 as a base fluid. Polyethylene glycols were lately studied as possible heat transfer fluids and several encouraging results were highlighted in the open literature. One of the main concerns is related to their relatively low thermal conductivity (i.e., around 0.2 W·m⁻<sup>1</sup>·K⁻<sup>1</sup>) and this study aims to give a good referential in terms of thermal conductivity and effusivity at experimental level on a number of polyethylene glycol mixtures enhanced with two kinds of nanoparticles: MWCNT and MgO. The experiment was performed on 28 samples with different concentrations of nanoparticles and the results showed an increase in thermal conductivity when nanoparticles are added, upsurge that is correlated with the nanoparticle type, concentration, as well as the base fluid type. Nevertheless, the host fluid properties influence was found to be relevant when small fractions of nanoparticles are employed, regardless of the nanoparticle type. Both the thermal conductivity and effusivity augmentation were noticed to linearly depend with nanoparticle loading, while the temperature influence was a second-degree polynomial one.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental Studies on Developing Novel Nanocolloids Based on PEG Mixtures and Different Nanoparticles: Insights into Thermal Conductivity and Effusivity

  • 期刊论文

  • 发表日期：

    2025年10月18日

查看全文
  • Nicoleta Cojocariu,
  • Elena Ionela Cherecheş,
  • Dana Bejan,
  • Bogdan Pricop,
  • Alina Adriana Minea

摘要

This article main aim is to propose new heat transfer fluids having polyethylene glycol mixtures or PEG 200 as a base fluid. Polyethylene glycols were lately studied as possible heat transfer fluids and several encouraging results were highlighted in the open literature. One of the main concerns is related to their relatively low thermal conductivity (i.e., around 0.2 W·m⁻1·K⁻1) and this study aims to give a good referential in terms of thermal conductivity and effusivity at experimental level on a number of polyethylene glycol mixtures enhanced with two kinds of nanoparticles: MWCNT and MgO. The experiment was performed on 28 samples with different concentrations of nanoparticles and the results showed an increase in thermal conductivity when nanoparticles are added, upsurge that is correlated with the nanoparticle type, concentration, as well as the base fluid type. Nevertheless, the host fluid properties influence was found to be relevant when small fractions of nanoparticles are employed, regardless of the nanoparticle type. Both the thermal conductivity and effusivity augmentation were noticed to linearly depend with nanoparticle loading, while the temperature influence was a second-degree polynomial one.