Effect of carbon nano inclusion dimensionality on the melting of phase change nanocomposites in vertical shell-tube thermal energy storage unit

Nitesh Das, Yasuyuki Takata, Masamichi Kohno, Sivasankaran Harish

研究成果: ジャーナルへの寄稿学術誌査読

46 被引用数 (Scopus)

抄録

In the present work, we numerically investigate the melting phenomena of carbon based nanocomposites in vertically oriented shell-tube latent heat thermal energy storage system. Organic alkane n-eicosane was considered as the phase change material and carbon allotropes as the nano fillers to enhance the thermal conductivity of n-alkane. The effect of different carbon allotropes like nanodiamond (spherical), single-walled carbon nanotubes (one-dimensional) and graphene nanoplatelets (two-dimensional) were considered. Thermal conductivity of nanocomposites was modeled using effective medium based formulation taking the interfacial thermal boundary resistance between nanomaterial and the surrounding host matrix into account. Numerical results show that spherical nano inclusions do not enhance the melting rate due to limited enhancement in the thermal conductivity of nanocomposites. However, the inclusion of one-dimensional and two-dimensional nanostructures shorten the melting time by ∼15% and ∼25% respectively at 1 vol% loading as a result of higher thermal conductivity enhancement.

本文言語英語
ページ(範囲)423-431
ページ数9
ジャーナルInternational Journal of Heat and Mass Transfer
113
DOI
出版ステータス出版済み - 2017

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学
  • 流体および伝熱

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