聚光太阳能发电厂（单混合）纳米流体热物理性质的数值研究

IF 2.7 Q3 NANOSCIENCE & NANOTECHNOLOGY

Journal of Nanofluids Pub Date : 2023-06-01 DOI:10.1166/jon.2023.2015

Fatah Boufoudi, S. Zouaoui, S. Mihoub, A. Benahmed, T. Tayebi

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引用次数: 0

摘要

纳米流体成为改善高效传热流体的重要解决方案。因此，有必要优化它们的性能。本文研究了温度和体积分数对不同纳米流体（单体和混合体）的热物理性质的影响，如：密度、热导率、动态粘度、运动粘度、不同纳米颗粒浓度和操作温度下的热容和焓。将两种纳米颗粒Al2O3、CuO添加到三种不同的常规基础流体中，即：Therminol VP-1；Sylsthrem 800；Dowtherm A，具有多种体积分数和不同温度（200–400°C）。使用MATLAB软件开发了一个数值模型，以评估可在CSP应用中用作工作流体的纳米流体的每种热物理性质的行为，并与它们的传统流体进行比较。结果表明，与纯流体相比，Al2O3的最佳值为4%，热物理性能有所改善。此外，温度的升高在粘度的降低中起着重要作用，它们对其他性质的影响也已被注意到，而在纯流体中添加纳米颗粒可以将热导率提高13%。最后，（Al2O3+CuO/Dowtherm A）杂化纳米流体在CSP应用中似乎很有吸引力。

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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Numerical Investigation of the (Mono-Hybrid) Nanofluid Thermophysical Properties for Concentrated Solar Power Plant

Nanofluids became an essential solution for the improvement of efficient heat transfer fluids. Thus, it’s necessary to optimize their propreties. This paper investigates the effect of the temperature and the volume fraction on the thermo-physical properties of different nanofluids (Mono and hybrid) such as: Density, thermal conductivity, dynamic viscosity, kinematic viscosity, heat capacity and enthalpy in various nanoparticule concentrations and operating temperature. Two nanoparticles Al2O3, CuO were added to three different conventional base fluids namely: Therminol VP-1; Sylthrem 800; Dowtherm A, with several volume fractions, and various temperatures (200–400 °C). A numerical model was developed using MATLAB software, to evaluate the behavior of each thermo-physical property of the nanofluid that can be used as a working fluid in CSP applications and compared with their conventional fluids. The results show an improvement in thermo-physical properties compared to pure fluids for an optimal value of 4% for Al2O3. Also, the increase in temperature plays an important role in the decrease in viscosity, and their influence on other properties has also been noticed while the addition of nanoparticles to the pure fluid allow to increase the thermal conductivity by 13%. Finally, the (Al2O3 + CuO/Dowtherm A) hybrid nanofluid sems to be attractive to use in CSP applications.

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来源期刊

Journal of Nanofluids NANOSCIENCE & NANOTECHNOLOGY-

自引率

14.60%

发文量

期刊介绍： Journal of Nanofluids (JON) is an international multidisciplinary peer-reviewed journal covering a wide range of research topics in the field of nanofluids and fluid science. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. The journal publishes full research papers, review articles with author''s photo and short biography, and communications of important new findings encompassing the fundamental and applied research in all aspects of science and engineering of nanofluids and fluid science related developing technologies.