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Investigating corrosion effects and heat transfer enhancement in smaller size radiators using CNT-nanofluids

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Abstract

Nanofluids have been extensively studied in the past to enhance the heat transfer performance and efficiency of systems. However, corrosion effects have been paid very little attention and thus this work presents an experimental study on the effect of carbon nanotubes (CNT) on corrosion of three different metals under study such as aluminium alloy, stainless steel and copper, respectively. The work was further extended to study the heat transfer performance in a car radiator of two different sizes. Both the studies were performed using four different fluids such as water, ethylene glycol, 0.02 % CNT-nanofluid and 0.1 % CNT-nanofluid, respectively. It was observed that among the three metals, the highest rate of corrosion occurs to aluminium, followed by stainless steel and copper, irrespective of the fluid used. The rate of corrosion increased with the increase in temperature (27–90 °C) in all cases. The experimental results showed that the stable CNT-nanofluids prepared in this work showed better heat transfer performance in both engines. Moreover, the smaller radiator using the CNT-nanofluids depicted enhanced heat transfer rates compared to the standard radiator using water and ethylene glycol.

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Authors and Affiliations

  1. Energy Research Group, School of Engineering, Taylors University, Subang Jaya, Malaysia

    W. Rashmi

  2. Nanoscience and Nanotechnology Research Group (NANORG), Kulliyyah of Engineering, International Islamic University, Gombak, Kuala Lumpur, Malaysia

    A. F. Ismail & A. Anuar

  3. Division of Manufacturing and Industrial Processes, Faculty of Engineering, University of Nottingham, Semenyih, Kuala Lumpur, Malaysia

    M. Khalid

  4. Department of Mechanical & Mechatronics Engineering, University of Southern Queensland, Toowoomba, Australia

    T. Yusaf

Authors
  1. W. Rashmi
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  2. A. F. Ismail
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  3. M. Khalid
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  4. A. Anuar
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  5. T. Yusaf
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Correspondence to W. Rashmi.

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Rashmi, W., Ismail, A.F., Khalid, M. et al. Investigating corrosion effects and heat transfer enhancement in smaller size radiators using CNT-nanofluids. J Mater Sci 49, 4544–4551 (2014). https://doi.org/10.1007/s10853-014-8154-y

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  • DOI: https://doi.org/10.1007/s10853-014-8154-y

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