Abstract
In this research, a novel phase change material (PCM), containing dodecanoic acid-tetradecanoic acid-dodecanol ternary mixture, designated as pure mixture, dispersed with two carbon-based nanoparticles, i.e., graphene nanoplatelets - multiwall carbon nanotube and graphene nanoplatelets-titanium dioxide, with 1% weight fraction, is prepared and is designated as nanoparticle-enriched-phase change material. The chemical and thermal analysis of pure ternary mixture and nanoparticle-enriched-phase change material was conducted using X-ray diffraction, Scanning electron microscopy, Differential scanning calorimetry, Fourier transform infrared, Thermo gravimetric analyser and Thermal conductivity analyser techniques. The pure mixture possess melting and freezing temperature of 15.6°C and 8.4°C with a melting-freezing latent heat (LH) of 131.5 J/g and 125.4 J/g, respectively. The thermal conductivity exhibited a significant increase of 187.6% in the case of pure mixture with graphene nanoplatelets- multiwall carbon nanotube and 41.7% for pure mixture with graphene nanoplatelets-titanium dioxide. Moreover, the PCM remained thermally stable in both cases, even with the incorporation of nanoparticles. The melting as well as freezing LHs were reduced by about 18.17% and 18.02% for graphene nanoplatelets- multiwall carbon nanotube dispersed PCM and, 12.49% and 9.49% for graphene nanoplatelets- titanium dioxide dispersed PCM, respectively, in comparison with the pure mixture. Similarly, the melting/freezing temperatures, gets also reduced by 9.6%/8.3% and 10.9%/8.3%, respectively, for both mixtures. The pure mixture with graphene nanoplatelets- multiwall carbon nanotube exhibited a substantial decrease in both charging and discharging times, with reductions of 28.48% and 18.73%, respectively, in comparison to pure mixture, at an air inlet velocity of 3 m/s.
Get full access to this article
View all access options for this article.
References
Supplementary Material
Please find the following supplemental material available below.
For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.
For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.
