Investigations on a novel composite phase change material comprising paraffin wax and CQDs for thermal conductivity enhancement

IF 1.1 4区工程技术 Q4 THERMODYNAMICS Thermal Science Pub Date : 2023-01-01 DOI:10.2298/tsci220911217j

Emeema Janumala, Murali Govindarajan, Venkateswara Reddi Bomma, Sivakandhan Chinnasamy

引用次数: 0

Abstract

Thermal energy storage using Phase Change Materials (PCMs) 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 PCMs were prepared by dispersing Carbon Quantum Dots (CQDs) with weight percentages of 1%, 5%, 10%, 15% and 20% in Paraffin Wax (PW). The study aims to investigate thermal conductivity enhancement of these composite PCMs and examine their applicability in thermal energy storage. Ultrasonication was utilized to prepare the composites. Scanning electron microscope (SEM) was employed to study surface morphology of microstructures of the PCMs. 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.

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石蜡与CQDs复合相变材料增强导热性能的研究

利用相变材料(PCMs)储能已经成为应对能源危机的关键，并正在引领储能管理的创新方法。本研究将碳量子点(CQDs)分别以1%、5%、10%、15%和20%的质量百分比分散在石蜡(PW)中，制备了新型复合PCMs。本研究旨在研究这些复合相变材料的导热性增强，并检验其在储热方面的适用性。采用超声法制备复合材料。利用扫描电子显微镜(SEM)研究了PCMs的表面微观结构。使用热流计测定导热系数，结果显示显著增加。20% wt.%复合PCM的增强率最高可达97.38%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.