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A study on the characteristics of carbon nanofluid for heat transfer enhancement of heat pipe

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  • Park, Sung Seek
  • Kim, Nam Jin

Abstract

For the purposes of enhancing the heat-transfer utility of the heat pipe in a solar collector, the present work attempted to improve nanoparticle dispersion stability by means of a chemical reformation process wherein nanofluid is formulated with hydroxyl radicals combined with oxidized multi-walled CNTs (MWCNTs). Experiments entailing measurements of thermal conductivity and viscosity in distilled water as functions of temperature were carried out to determine the best nanoparticle mixture ratio. The thermal conductivity increased with the increasing volumetric ratio of the oxidized MWCNTs and with increasing temperature. The viscosity also increased, slowly, until its concentration reached 0.01%, and then steeply increased, and was lower at high temperature.

Suggested Citation

  • Park, Sung Seek & Kim, Nam Jin, 2014. "A study on the characteristics of carbon nanofluid for heat transfer enhancement of heat pipe," Renewable Energy, Elsevier, vol. 65(C), pages 123-129.
    • Handle: RePEc:eee:renene:v:65:y:2014:i:c:p:123-129
    DOI: 10.1016/j.renene.2013.07.040
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    Cited by:

    1. Zhang, Zhien & Cai, Jianchao & Chen, Feng & Li, Hao & Zhang, Wenxiang & Qi, Wenjie, 2018. "Progress in enhancement of CO2 absorption by nanofluids: A mini review of mechanisms and current status," Renewable Energy, Elsevier, vol. 118(C), pages 527-535.
    2. Alhuyi Nazari, Mohammad & Ahmadi, Mohammad H. & Ghasempour, Roghayeh & Shafii, Mohammad Behshad & Mahian, Omid & Kalogirou, Soteris & Wongwises, Somchai, 2018. "A review on pulsating heat pipes: From solar to cryogenic applications," Applied Energy, Elsevier, vol. 222(C), pages 475-484.
    3. Miqdam T. Chaichan & Hussein A. Kazem & Moafaq K. S. Al-Ghezi & Ali H. A. Al-Waeli & Ali J. Ali & Kamaruzzaman Sopian & Abdul Amir H. Kadhum & Wan Nor Roslam Wan Isahak & Mohd S. Takriff & Ahmed A. Al, 2023. "Effect of Different Preparation Parameters on the Stability and Thermal Conductivity of MWCNT-Based Nanofluid Used for Photovoltaic/Thermal Cooling," Sustainability, MDPI, vol. 15(9), pages 1-24, May.

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