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Bulletin of Materials Science

, Volume 36, Issue 4, pp 517–520 | Cite as

Dependence of thermal conductivity in micro to nano silica

  • VANGALA DHANUNJANA CHARIEmail author
  • DEEPALA V S G K SHARMA
  • PINNELLI S R PRASAD
  • S RAMANA MURTHY
Article

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  μ m  >  d  >  250  μ m were also studied to probe the particle size dependence on thermal conductivity. Thermal conductivity decreased by about 70% in silica nano powders.

Keywords

Thermal conductivity micro and nano particle size needle probe method 

References

  1. Al Nakshabandi G and Kohnke H 1965 Agric. Meteor. 2 271CrossRefGoogle Scholar
  2. ASTM D 5334 Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure, 1995 Annual Book of ASTM Standards, Vol. 04.09, p. 225Google Scholar
  3. Blackwell J H 1954 J. Appl. Phys. 25 137CrossRefGoogle Scholar
  4. Cars law H S and Jaeger J C 1964 Conduction of heat in solids (UK: Oxford Press) 2nd ed., pp. 58–60, 344–345Google Scholar
  5. Chen Shan Xiong 2008 Heat Mass Transfer 44 1241CrossRefGoogle Scholar
  6. Ding Yulong et al 2007 Heat transfer intensification using nanofluid, KONA No. 25Google Scholar
  7. Donazzi F 1977 Proc. IEE 123 506Google Scholar
  8. Fang Kuan-Chuan, Weng Cheng-I and Ju Shin-Pon 2006 Nanotechnology 17 3909CrossRefGoogle Scholar
  9. Manohar K, Yarbrough David W I and Booth James R 2000 Test. Eval. 28(5) 345CrossRefGoogle Scholar
  10. Weast R C ed., 1982 CRC hand book of chemistry and physics (CRC Press Inc.) 62nd ed., p. E-82Google Scholar
  11. Winterport H F 1970 Suggested method of test for thermal resistivity of soil by thermal probe, Special procedure for testing soil and rock for engineering purposes, ASTM STP 479, ASTM p. 264Google Scholar

Copyright information

© Indian Academy of Sciences 2013

Authors and Affiliations

  • VANGALA DHANUNJANA CHARI
    • 1
    • 2
    Email author
  • DEEPALA V S G K SHARMA
    • 1
  • PINNELLI S R PRASAD
    • 1
  • S RAMANA MURTHY
    • 2
  1. 1.Gas Hydrates groupNational Geophysical Research Institute (Council for Scientific & Industrial Research)HyderabadIndia
  2. 2.Department of PhysicsOsmania UniversityHyderabadIndia

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