Thermal conductivity measurement of VO2 nanofluid using bidirectional 3ω method

IF 1.1 4区工程技术 Q4 Engineering

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI:10.32908/hthp.v50.1071

Duk Hyung Lee, D. Oh, Sok-Won Kim, Yeon Suk Choi

引用次数: 0

Abstract

Nanofluids containing vanadium dioxide (VO2) are used in applications such as actuators, smart windows, and gastrointestinal tracts. Therefore, measuring the thermal conductivity of nanofluids with VO2 characteristics is important in various environmental industries. In this study, the bidirectional 3 omega (3ω) method was used to measure the thermal conductivity of nanofluids. Experimental equipment for measuring VO2 nanofluids in various environments was designed and fabricated. The effectiveness of the bidirectional 3ω equipment was verified by measuring the thermal conductivity of ethylene glycol, which has been extensively reported in the literature. The effects of elapsed time, specimen thickness, and operation temperature on the thermal conductivity are discussed in this paper. In addition, the measuring error was investigated with regard to the precipitation of particles in the suspension.

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用双向3ω法测量VO2纳米流体的导热系数

含有二氧化钒(VO2)的纳米流体用于执行器、智能窗口和胃肠道等应用。因此，测量具有VO2特性的纳米流体的导热性在各种环境工业中具有重要意义。本研究采用双向3ω (3ω)法测量纳米流体的导热系数。设计并制作了不同环境下纳米流体VO2测量实验装置。通过测量乙二醇的导热系数验证了双向3ω设备的有效性，这在文献中得到了广泛的报道。本文讨论了运行时间、试样厚度和操作温度对导热系数的影响。此外，还研究了悬浮液中颗粒析出的测量误差。

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

High Temperatures-high Pressures THERMODYNAMICS-MECHANICS

CiteScore

1.00

自引率

9.10%

发文量

期刊介绍： High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.