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    • Keywords


      Thermal conductivity; micro and nano particle size; needle probe method.

    • Abstract


      This work presents the measurement of thermal conductivity of nano-silica particles using needle probe method. The validation test of thermal probe was conducted on ice and THF hydrates using our experimental set up and the results are satisfactory when compared with the literature data. The nano silica used in this study is with particle sizes in the range 50–1000 nm. The sand powders sieved in different sizes <75 and 75 𝜇m > 𝑑 > 250 𝜇m were also studied to probe the particle size dependence on thermal conductivity. Thermal conductivity decreased by about 70% in silica nano powders.

    • Author Affiliations


      Vangala Dhanunjana Chari1 2 Deepala V S G K Sharma1 Pinnelli S R Prasad1 S Ramana Murthy2

      1. Gas Hydrates group, National Geophysical Research Institute (Council for Scientific & Industrial Research), Hyderabad 500 007, India
      2. Department of Physics, Osmania University, Hyderabad 500 007, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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