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Comprehensive Experimental Study on the Thermophysical Characteristics of DI Water Based Co 0.5 Zn 0.5 Fe 2 O 4 Nanofluid for Solar Thermal Harvesting

Author

Listed:
  • Tsogtbilegt Boldoo

    (Department of Mechanical Engineering, Chosun University, Gwangju 61452, Korea)

  • Jeonggyun Ham

    (Department of Mechanical Engineering, Chosun University, Gwangju 61452, Korea)

  • Honghyun Cho

    (Department of Mechanical Engineering, Chosun University, Gwangju 61452, Korea)

Abstract

The thermophysical properties of water-based Co 0.5 Zn 0.5 Fe 2 O 4 magnetic nanofluid were investigated experimentally. Consequently, the viscosities of 0.25 wt% and 1 wt% Co 0.5 Zn 0.5 Fe 2 O 4 nanofluid were 1.03 mPa∙s and 1.13 mPa∙s, each greater than that of the 20 °C base fluid (water), which were increased by 7.3% and 17.7%, respectively. The Co 0.5 Zn 0.5 Fe 2 O 4 nanofluid thermal conductivity enhanced from 0.605 and 0.618 to 0.654 and 0.693 W/m·°C at concentrations of 0.25 wt% and 1 wt%, respectively, when the temperature increased from 20 to 50 °C. The maximum thermal conductivity of the Co 0.5 Zn 0.5 Fe 2 O 4 nanofluid was 0.693 W/m·°C at a concentration of 1 wt% and a temperature of 50 °C. Furthermore, following a solar exposure of 120 min, the photothermal energy conversion efficiency of 0.25 wt%, 0.5 wt%, 0.75 wt%, and 1 wt% Co 0.5 Zn 0.5 Fe 2 O 4 nanofluids increased by 4.8%, 5.6%, 7.1%, and 4.1%, respectively, more than that of water.

Suggested Citation

  • Tsogtbilegt Boldoo & Jeonggyun Ham & Honghyun Cho, 2020. "Comprehensive Experimental Study on the Thermophysical Characteristics of DI Water Based Co 0.5 Zn 0.5 Fe 2 O 4 Nanofluid for Solar Thermal Harvesting," Energies, MDPI, vol. 13(23), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:23:p:6218-:d:451356
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    References listed on IDEAS

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    1. Tong, Yijie & Boldoo, Tsogtbilegt & Ham, Jeonggyun & Cho, Honghyun, 2020. "Improvement of photo-thermal energy conversion performance of MWCNT/Fe3O4 hybrid nanofluid compared to Fe3O4 nanofluid," Energy, Elsevier, vol. 196(C).
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    Cited by:

    1. Youngho Lee & Hyomin Jeong & Yonmo Sung, 2021. "Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al 2 O 3 ) for Solar Thermal Harvesting," Energies, MDPI, vol. 14(16), pages 1-12, August.
    2. Pavel G. Struchalin & Dmitrii M. Kuzmenkov & Vladimir S. Yunin & Xinzhi Wang & Yurong He & Boris V. Balakin, 2022. "Hybrid Nanofluid in a Direct Absorption Solar Collector: Magnetite vs. Carbon Nanotubes Compete for Thermal Performance," Energies, MDPI, vol. 15(5), pages 1-8, February.
    3. Dmitrii M. Kuzmenkov & Pavel G. Struchalin & Andrey V. Olkhovskii & Vladimir S. Yunin & Kirill V. Kutsenko & Boris V. Balakin, 2021. "Solar-Driven Desalination Using Nanoparticles," Energies, MDPI, vol. 14(18), pages 1-11, September.
    4. Gianpiero Colangelo & Marco Milanese & Giuseppe Starace & Arturo de Risi, 2023. "Advances in the Development of New Heat Transfer Fluids Based on Nanofluids," Energies, MDPI, vol. 16(2), pages 1-3, January.

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