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Thermal transport properties enhancement of paraffin via encapsulation into boron nitride nanotube: a molecular dynamics study

Published online by Cambridge University Press:  25 June 2020

Nastaran Barhemmati-Rajab Open the ORCID record for Nastaran Barhemmati-Rajab [Opens in a new window] ,
Thiruvillamalai Mahadevan ,
Jincheng Du  and
Weihuan Zhao
Nastaran Barhemmati-Rajab
Affiliation:
Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX76203, USA
Thiruvillamalai Mahadevan
Affiliation:
Department of Materials Science and Engineering, University of North Texas, Denton, TX76203, USA
Jincheng Du
Affiliation:
Department of Materials Science and Engineering, University of North Texas, Denton, TX76203, USA
Weihuan Zhao*
Affiliation:
Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX76203, USA
*
Address all correspondence to Weihuan Zhao at weihuan.zhao@unt.edu
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Abstract

This research investigates a novel composite of encapsulated paraffin in boron nitride nanotube (BNNT) which is more thermally and chemically stable than carbon nanotube. This composite can achieve high thermal conductivity and, meanwhile, have thermal energy storage capability for efficient thermal management under extreme conditions. Equilibrium molecular dynamics simulations were conducted to study self-diffusion coefficient, thermal conductivity, and specific heat of encapsulated paraffin. The simulation results indicated that the self-diffusion coefficient and thermal conductivity of paraffin could be increased by up to 10 and 7 times, respectively, while specific heat was reduced after encapsulating into BNNT.

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Research Letters
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MRS Communications , Volume 10 , Issue 3 , September 2020 , pp. 475 - 481
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Copyright © Materials Research Society, 2020

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