化工学报2025，Vol.76Issue(3)：1312-1322,11.DOI:10.11949/0438-1157.20240841
基于生物碳材料强化的硬脂酸相变材料储热性能研究
Research on the heat storage properties of stearic acid phase change materials enhanced by bio-carbon materials
摘要
Abstract
To enhance the phase change heat storage properties of stearic acid(SA),boron nitride(BN),carbonized loofah sponge fragments(CLSF),and BN-CLSF mixtures were added into SA to prepare composite phase change materials.The effect of the different additives on the phase change heat storage properties of stearic acid was investigated.The results show that when the mass fraction of BN-CLSF is 2.5%,the thermal conductivity of the composite material can be increased by 16.4%at most,and the corresponding latent heat of fusion is 153.04 J·g-1.The composites present a maximum reduction of 72.3%in melting time and 33.3%in solidification time compared to pure SA.The temperature of the composite SA/CLSF is increased by 11.14℃compared to that of pure SA after 550 s of light exposure,which indicates that the addition of CLSF enhances the photothermal conversion capability of the composites.The obtained carbonized loofah sponge fragments/stearic acidcomposites in this study show good thermophysical properties and photothermal conversion capabilities,which attribute to wide potential applications in the application of solar thermal utilization,building energy conservation,and industrial waste heat recovery.关键词
热传导/复合材料/焓/相变储热/瞬态响应Key words
heat conduction/composites/enthalpy/phase change thermal storage/transient response分类
能源科技引用本文复制引用
肖俊兵,钟湘宇,任建地,钟芳芳,刘昌会,贾传坤..基于生物碳材料强化的硬脂酸相变材料储热性能研究[J].化工学报,2025,76(3):1312-1322,11.基金项目
国家自然科学基金项目(52206192) （52206192）
湖南省自然科学基金项目(2022JJ40499) （2022JJ40499）
湖南省教育厅优秀青年项目(22B0289) （22B0289）
