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Stability and Thermal Conductivity of Ethylene Glycol and Water Nanofluid Containing Graphite Nanoparticles

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Innovations in Sustainable Energy and Technology

Part of the book series: Advances in Sustainability Science and Technology ((ASST))

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Abstract

Heat transfer enhancement in a heat exchanger using conventional fluids such as water, ethylene glycol and engine oils is limited due to lower thermal conductivity of fluids. Addition of nanoparticles to these fluids can provide better heat transfer due to improved thermophysical properties. In this study, thermal conductivity and stability of ethylene glycol (EG) and water (35:65 in terms of volume)-based graphite nanofluids were investigated experimentally. Nanofluids containing graphite nanoparticles in weight concentrations in the range of 0.5–2 wt% were prepared using ultrasonication method. Thermal conductivity of nanofluids was measured at each weight concentration in the temperature range of 30–50 °C using transient hot wire method. Subsequently, the stability of EG and water-based graphite nanofluids was evaluated by visual observation and thermal conductivity measurement over a period of 30 days at 30 °C. The results showed that thermal conductivity enhances by adding graphite nanoparticles to the ethylene glycol and water. It was found from the study that thermal conductivity of prepared nanofluid increases with increase in temperature. Addition of 2 wt% of graphite nanoparticles in EG: water showed an enhancement of 22% and 26.67% in thermal conductivity at 30 and 50 °C, respectively. Stability study overtime reveals that there is no considerable difference in thermal conductivity for 30 days indicating a stable nanofluid dispersion. A correlation was developed to predict the thermal conductivity of EG: water-based graphite nanofluids.

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Acknowledgements

Financial support for this study was provided by a grant (ARDB/01/2031857/M/I) from the Aeronautical Research and Development Board (AR&DB)—Defence research and development organization, India.

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Authors and Affiliations

  1. National Institute of Technology, Warangal, Telangana, 506004, India

    Kyathanahalli Marigowda Yashawantha, Gaurav Gurjar & A. Venu Vinod

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  1. Kyathanahalli Marigowda Yashawantha
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  2. Gaurav Gurjar
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  3. A. Venu Vinod
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Corresponding author

Correspondence to A. Venu Vinod .

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Editors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India

    P. Muthukumar

  2. Department of Applied Sciences, University of Quebec at Chicoutimi, Chicoutimi, QC, Canada

    Dilip Kumar Sarkar

  3. Energy Institute, Bengaluru, Rajiv Gandhi Institute of Petroleum Technology, Bengaluru, India

    Debasis De

  4. Department of Electronics and Communication Engineering, Haldia Institute of Technology, Haldia, West Bengal, India

    Chanchal Kumar De

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Yashawantha, K.M., Gurjar, G., Venu Vinod, A. (2021). Stability and Thermal Conductivity of Ethylene Glycol and Water Nanofluid Containing Graphite Nanoparticles. In: Muthukumar, P., Sarkar, D.K., De, D., De, C.K. (eds) Innovations in Sustainable Energy and Technology. Advances in Sustainability Science and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-16-1119-3_21

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  • DOI: https://doi.org/10.1007/978-981-16-1119-3_21

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-1118-6

  • Online ISBN: 978-981-16-1119-3

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