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Solar energy (Phoenix, Ariz.). 2020:210:10.1016/j.energy.2020.118523. doi: 10.1016/j.energy.2020.118523 Q26.02024

Aqueous nanofluids containing paraffin-filled MWCNTs for improving effective specific heat and extinction coefficient

含石蜡填充MWCNT的水基纳米流体对有效比热和消光系数的影响 翻译改进

Tae Jong Choi  1, Sung Hyoun Kim  1, Seok Pil Jang  1, Lingnan Lin  2, M A Kedzierski  2

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作者单位

  • 1 School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang, Gyeonggi-do, 412-791, South Korea.
  • 2 National Institute of Standards and Technology, Bldg. 226, Rm B114, Gaithersburg, MD, 20899, USA.
  • DOI: 10.1016/j.energy.2020.118523 PMID: 34131353

    摘要 Ai翻译

    This paper presents measurements of the effective specific heat and the extinction coefficient for aqueous nanofluids dispersed with paraffin-filled Multi-Walled Carbon NanoTubes (MWCNTs). The MWCNTs were filled with paraffin wax by capillary action. Centrifugal decanting was used to modify the traditional two-step method so as to produce a nanofluid dispersion that was more stable than that produced by the traditional method. The stability of each suspension was quantitatively evaluated with a laser scattering method over 7 days. A differential scanning calorimetry (DSC) and the three-slap method were used to measure the effective specific heat and the extinction coefficient of the nanofluids, respectively. The measured effective specific heat of the water-based paraffin-filled MWCNTs nanofluid, with a volume fraction of 1%, was up to 5.1% larger than that for the water-based MWCNT nanofluids without paraffin wax. The nanofluid extinction coefficient was shown to increase linearly with the volume fraction for data within the independent scattering regime, which occurred when the nanoparticle-distance/wavelength ratio (c/λ) was less than 2.

    Keywords: Effective specific heat; Extinction coefficient; Nanofluids; Paraffin-filled MWCNTs.

    Keywords:aqueous nanofluids; paraffin-filled mwcnts; effective specific heat

    Copyright © Solar energy (Phoenix, Ariz.). 中文内容为AI机器翻译,仅供参考!

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    期刊名:Solar energy

    缩写:SOL ENERGY

    ISSN:0038-092X

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    IF/分区:6.0/Q2

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    Aqueous nanofluids containing paraffin-filled MWCNTs for improving effective specific heat and extinction coefficient