Thermal conductivity and specific heat capacity of water–ethylene glycol mixture-based nanofluids with graphene nanoplatelets

C. Selvam, D. Mohan Lal, Sivasankaran Harish

研究成果: ジャーナルへの寄稿記事

20 引用 (Scopus)

抄録

In the present work, we report the thermal conductivity and specific heat capacity of water–ethylene glycol mixture with graphene nanoplatelets inclusions. Stable nanofluid dispersions were prepared with sodium deoxycholate as the surfactant. Stability of nanofluids was characterized by optical absorption spectroscopy and zeta potential analysis. Thermal conductivity of nanofluids was found to increase with respect to nanoplatelets loading, while the specific heat capacity was decreasing. Highest enhancement in thermal conductivity of nanofluid was found to be ~18% at 0.45 vol% of nanoplatelets loading while at the same concentration the specific heat capacity was ~8% lower. Further measured thermal conductivity was compared with effective medium theory calculations considering the role of interfacial thermal resistance. From the model calculations, we show that the interfacial thermal resistance between graphene nanoplatelets and water–ethylene glycol mixture was significantly high in the order of 1.7 × 10−8 m2 K W−1 which limits the thermal conductivity enhancement despite the high intrinsic thermal conductivity of graphene nanoplatelets.

元の言語英語
ページ(範囲)947-955
ページ数9
ジャーナルJournal of Thermal Analysis and Calorimetry
129
発行部数2
DOI
出版物ステータス出版済み - 8 1 2017

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Glycols
Graphite
Specific heat
glycols
Thermal conductivity
graphene
thermal conductivity
specific heat
heat
thermal resistance
Heat resistance
Deoxycholic Acid
augmentation
Zeta potential
Absorption spectroscopy
Dispersions
Surface-Active Agents
Light absorption
absorption spectroscopy
optical absorption

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

これを引用

Thermal conductivity and specific heat capacity of water–ethylene glycol mixture-based nanofluids with graphene nanoplatelets. / Selvam, C.; Mohan Lal, D.; Harish, Sivasankaran.

:: Journal of Thermal Analysis and Calorimetry, 巻 129, 番号 2, 01.08.2017, p. 947-955.

研究成果: ジャーナルへの寄稿記事

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