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Porous biochar/heptadecane composite phase change material with leak-proof, high thermal energy storage capacity and enhanced thermal conductivity
Powder Technology ( IF 5.2 ) Pub Date : 2021-09-15 , DOI: 10.1016/j.powtec.2021.09.030
Gökhan Hekimoğlu 1 , Ahmet Sarı 1, 2 , S. Arunachalam 3 , Hasan Arslanoğlu 4 , Osman Gencel 5
Affiliation  

Solid-liquid phase change materials (PCMs) have been preferred for solar passive thermal energy storage (TES) applications. However, low thermal conductivity and leakage issue of molten PCMs considerably restrain their TES potential. In this framework, n-Heptadecane (HD) as a solid-liquid PCM was incorporated with carbonized lemon peel (CLP) for development of a novel leak-proof composite PCM. Chemical compatibility between the constituents of the leak-proof composite PCM was examined by using FTIR spectroscopy and XRD diffraction analyses. The DSC results revealed that the developed leak-proof CLP/HD composite PCM had a melting temperature of 19.79 °C and LHS capacity of 141.8 J/g. The composite PCM exposed venerable thermal degradation stability after a 1000-cycling heating-cooling process. Thermal conductivity of the CLP/HD composite PCM (0.46 W/m.K at 10 °C) was measured as approximately 77% higher than that of pristine HD (0.26 W/m.K at 10 °C).



中文翻译:

多孔生物炭/十七烷复合相变材料,具有防漏、高蓄热能力和增强的导热性

固液相变材料 (PCM) 已成为太阳能被动热能储存 (TES) 应用的首选。然而,熔融 PCM 的低热导率和泄漏问题极大地限制了它们的 TES 潜力。在此框架中,正十七烷 (HD) 作为固液 PCM 与碳化柠檬皮 (CLP) 相结合,用于开发新型防漏复合 PCM。通过使用 FTIR 光谱和 XRD 衍射分析检查了防漏复合 PCM 成分之间的化学相容性。DSC 结果表明,所开发的防漏 CLP/HD 复合 PCM 的熔化温度为 19.79 °C,LHS 容量为 141.8 J/g。经过 1000 次循环加热-冷却过程后,复合 PCM 表现出令人尊敬的热降解稳定性。CLP/HD 复合 PCM 的热导率 (0.

更新日期:2021-09-23
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