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用于确定热扩散率的光纤热波腔技术中纳米流体的热波长测量

Thermal Wavelength Measurement of Nanofluid in an Optical-Fiber Thermal Wave Cavity Technique to Determine the Thermal Diffusivity.

作者信息

Noroozi Monir, Mohammadi Bijan, Radiman Shahidan, Zakaria Azmi

机构信息

School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran.

School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.

出版信息

ScientificWorldJournal. 2018 Mar 1;2018:9458952. doi: 10.1155/2018/9458952. eCollection 2018.

DOI:10.1155/2018/9458952
PMID:29686589
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5852883/
Abstract

The application of optical-fiber thermal wave cavity (OF-TWC) technique was investigated to measure the thermal diffusivity of Ag nanofluids. The thermal diffusivity was obtained by measuring the thermal wavelength of sample in a cavity scan mode. The spherical Ag nanoparticles samples were prepared at various sizes using the microwave method. Applying the thermal wavelength measurement in a flexible OF-TWC technique requires only two experimental data sets. It can be used to estimate thermal diffusivity of a small amount of liquid samples (0.3 ml) in a brief period. UV-Vis spectroscopy and transmission electron microscopy were used to measure the characterization of the Ag nanoparticles. The thermal diffusivity of distilled water, glycerol, and two different types of cooking oil was measured and has an excellent agreement with the reported results in the literature (difference of only 0.3%-2.4%). The nanofluids showed that the highest value of thermal diffusivity was achieved for smaller sized nanoparticles. The results of this method confirmed that the thermal wavelength measurement method using the OF-TWC technique had potential as a tool to measure the thermal diffusivity of nanofluids with different variables such as the size, shape, and concentration of the nanoparticles.

摘要

研究了光纤热波腔（OF-TWC）技术在测量银纳米流体热扩散率方面的应用。通过在腔扫描模式下测量样品的热波长来获得热扩散率。使用微波法制备了不同尺寸的球形银纳米颗粒样品。在灵活的OF-TWC技术中应用热波长测量仅需要两组实验数据集。它可用于在短时间内估计少量液体样品（0.3毫升）的热扩散率。使用紫外可见光谱和透射电子显微镜来测量银纳米颗粒的特性。测量了蒸馏水、甘油和两种不同类型食用油的热扩散率，与文献报道的结果具有很好的一致性（差异仅为0.3%-2.4%）。纳米流体表明，尺寸较小的纳米颗粒实现了最高的热扩散率值。该方法的结果证实，使用OF-TWC技术的热波长测量方法有潜力作为一种工具，用于测量具有不同变量（如纳米颗粒的尺寸、形状和浓度）的纳米流体的热扩散率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/4cdf6dd5d6c0/TSWJ2018-9458952.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/df9aced99cad/TSWJ2018-9458952.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/7dbfbfc70329/TSWJ2018-9458952.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/85ec64858f51/TSWJ2018-9458952.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/87d01c547dc8/TSWJ2018-9458952.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/6bf42055b8f6/TSWJ2018-9458952.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/cf1394682c8d/TSWJ2018-9458952.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/1b677b44a0e5/TSWJ2018-9458952.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/d5ff53f4f536/TSWJ2018-9458952.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/4cdf6dd5d6c0/TSWJ2018-9458952.009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/df9aced99cad/TSWJ2018-9458952.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/7dbfbfc70329/TSWJ2018-9458952.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/85ec64858f51/TSWJ2018-9458952.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/87d01c547dc8/TSWJ2018-9458952.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/6bf42055b8f6/TSWJ2018-9458952.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/cf1394682c8d/TSWJ2018-9458952.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/1b677b44a0e5/TSWJ2018-9458952.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/d5ff53f4f536/TSWJ2018-9458952.008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04f3/5852883/4cdf6dd5d6c0/TSWJ2018-9458952.009.jpg

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本文引用的文献

1
Fabrication, characterization, and thermal property evaluation of silver nanofluids.银纳米流体的制备、表征及热性能评估
Nanoscale Res Lett. 2014 Nov 29;9(1):645. doi: 10.1186/1556-276X-9-645. eCollection 2014.
2
A simplified model for thermal-wave cavity self-consistent measurement of thermal diffusivity.一种用于热扩散率热波腔自洽测量的简化模型。
Rev Sci Instrum. 2013 Dec;84(12):124902. doi: 10.1063/1.4846255.
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Recent advances in thermal conductivity of nanofluids.纳米流体热导率的最新进展。
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Tuning the thermal diffusivity of silver based nanofluids by controlling nanoparticle aggregation.通过控制纳米粒子聚集来调整基于银的纳米流体的热扩散率。
Nanotechnology. 2013 Sep 13;24(36):365601. doi: 10.1088/0957-4484/24/36/365601. Epub 2013 Aug 13.
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Thermal diffusivity measurement for urchin-like gold nanofluids with different solvents, sizes and concentrations/shapes.不同溶剂、尺寸和浓度/形状的仿刺参状金纳米流体的热扩散率测量。
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Thermal diffusivity measurement of spherical gold nanofluids of different sizes/concentrations.不同粒径/浓度的球形金纳米流体的热扩散率测量。
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