THERMAL SCIENCE

International Scientific Journal

Emeema Janumala

,

Murali Govindarajan

,

Venkateswara Reddi Bomma Reddi

,

Sivakandhan Chinnasamy

INVESTIGATIONS ON A NOVEL COMPOSITE PHASE CHANGE MATERIAL COMPRISING PARAFFIN WAX AND CQD FOR THERMAL CONDUCTIVITY ENHANCEMENT

ABSTRACT
Thermal energy storage using phase change materials (PCM) has become crucial in combating the energy crisis and is leading to innovative approaches in energy storage management. As part of this study, novel composite PCM were prepared by dispersing carbon quantum dots (CQD) with weight percentages of 1%, 5%, 10%, 15%, and 20% in paraffin wax. The study aims to investigate thermal conductivity enhancement of these composite PCM and examine their applicability in thermal energy storage. Ultrasonication was utilized to prepare the composites. The SEM was employed to study surface morphology of micro-structures of the PCM. Thermal conductivity was determined using a heat flow meter and results revealed a remarkable increase. Maximum enhancement ratio of 97.38% was obtained for the 20 wt.% composite PCM.
KEYWORDS
paraffin wax, Carbon Quantum Dots, phase change material, Composite PCMs, thermal conductivity, energy storage
PAPER SUBMITTED: 2022-09-11
PAPER REVISED: 2023-08-05
PAPER ACCEPTED: 2023-08-26
PUBLISHED ONLINE: 2023-10-08
DOI REFERENCE: https://doi.org/10.2298/TSCI220911217J
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 6, PAGES [4747 - 4755]
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Investigations on a novel composite phase change material comprising paraffin wax and CQD for thermal conductivity enhancement

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence