Enhancing the Thermal Conductivity of 1-OD/Indium Composite Phase Change Material for Thermal Energy Storage
Year: 2024
Type: article
Abstract: In this study, the effects of processing temperatures of indium nanoparticles (In NPs) on the thermal conductivity (κ) of an organic phase change material (PCM) were investigated. 1-octadecanol (1-OD) also known as stearyl alcohol, with chemical formula C18H38O was selected as the organic PCM. Surface of Indium nanoparticles are functionalized with polyvinylpyrrolidone (PVP) to promote particles dispersion in 1-OD medium. Experimental analysis showed that for the In NPs/1-OD composite phase change material (CPCM) with a ~12 vol.% (~55 wt.%) of In NPs loading, specific melting latent heat (Lm) of the mixture is 103.1 J/g (~41.5% Lm,1-OD). This value is proportional to weight % loading of 1-OD (~45 wt.%) in the mixture. The κ versus processing temperature graph showed a turning point between 100 °C and 110 °C reaching a κ = 2.56 ± 0.07 W/mk at this processing temperature range. This is ~ 6.74-fold higher than κ of the 1-OD organic PCM matrix at 0.38 ± 0.01 W/mK. This is due to formation of high aspect ratio (length/diameter) conductive network pathways of In NPs in 1-OD organic PCM.
DOI: 10.4028/p-ht4xm7
Authors: Kamyar Pashayi, Kristopher J. Kolonko
Institution: Siena College
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4405580441