Enhancing Heat Transfer with New Hybrid Nanofluids type Core@Shell Nanoparticles

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Enhanced Heat Transfer Pub Date : 2024-08-01 DOI:10.1615/jenhheattransf.2024053149

Iachachene Farida, Achab Louisa, Cheradi Hanane

引用次数: 0

Abstract

In this numerical study, we investigate a novel hybrid consisting of core-shell nanoparticles with a ZnO@Ag structure, with the aim of enhancing heat transfer in non-uniformly heated systems. The numerical analysis spans a diverse set of Rayleigh numbers with a constant nanoparticle density of 0.1%. The results demonstrate significant improvements in Nusselt numbers, with ZnO@Ag nanoparticles, which exhibited a remarkable 20.15% enhancement. This enhancement is attributed to the even coating of materials with superior thermal properties, such as Ag, onto metallic oxides like ZnO, leading to increased overall thermal conductivity. These findings underscore the promising potential of core-shell nanoparticles for enhancing heat transfer in engineering applications, thereby motivating further research and optimization efforts.

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利用新型混合纳米流体增强芯@壳纳米颗粒的传热性能

在这项数值研究中，我们研究了一种由具有 ZnO@Ag 结构的核壳纳米粒子组成的新型混合体，旨在增强非均匀受热系统中的热传递。数值分析跨越了一组不同的瑞利数，纳米粒子密度恒定为 0.1%。结果表明，ZnO@Ag 纳米粒子的努塞尔特数有了明显改善，显著提高了 20.15%。这种增强归因于在 ZnO 等金属氧化物上均匀涂覆了具有优异热性能的材料（如 Ag），从而提高了整体热导率。这些发现强调了核壳纳米粒子在工程应用中增强热传导的巨大潜力，从而推动了进一步的研究和优化工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Enhanced Heat Transfer 工程技术-工程：机械

CiteScore

3.60

自引率

8.70%

发文量

审稿时长

12 months

期刊介绍： The Journal of Enhanced Heat Transfer will consider a wide range of scholarly papers related to the subject of "enhanced heat and mass transfer" in natural and forced convection of liquids and gases, boiling, condensation, radiative heat transfer. Areas of interest include: ■Specially configured surface geometries, electric or magnetic fields, and fluid additives - all aimed at enhancing heat transfer rates. Papers may include theoretical modeling, experimental techniques, experimental data, and/or application of enhanced heat transfer technology. ■The general topic of "high performance" heat transfer concepts or systems is also encouraged.