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Author(s): Ali A. Alemrajabi, Mamoun Muhammed, Muhammet S. Toprak, Nader Nikkam, Rahmatollah Khodabandeh, Sadegh Motahar

Keywords: nanoparticles, pcms, phase change materials, scanning electron microscopy, scanning electron microscopy (sem), sem, tem, thermal conductivity, thermal constants analyzer, transmission electron microscopy, transmission electron microscopy (tem), viscosity

Abstract: A composite PCM was prepared from n-octadecane and mesoporous silica (MPSiO2) nanoparticles. The nanoparticles were added in quantities ranging from 1 wt. % to 5 wt. %, and the thermal conductivity of each composite sample was determined as a function of temperature. The most significant enhancement in thermal conductivity was observed in the sample containing 3 wt. % MPSiO2 nanoparticles. The viscosity of the composite samples was also investigated and it was found that at mass fractions greater than 3%, the viscosity illustrated non-Newtonian behavior.

Reference: International Communications in Heat and Mass Transfer, 56 (2014) 114-120

DOI: 10.1016/j.icheatmasstransfer.2014.06.005