使用纳米材料作为复合相变材料的劳里克酸的热性能增强
Harikrishnan Santhanam1, Hafiz Muhammad Ali2,3, Ravi Kumar Sharma4
1Thermal Laboratory, Department of Mechanical Engineering, Kings Engineering College, Irungattukottai, Chennai, Tamil Nadu, 602117, India.
Environmental science and pollution research international
|February 23, 2024
概括
这项研究用纳米粒子 (NP) 增强了酸相变材料 (PCM). 复合PCM显示出更好的导热性和更快的融/结,使它们适合太阳能加热.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 热力工程是热力工程中的一个.
背景情况:
- 换相材料 (PCM) 对于热能储存至关重要.
- 劳里克酸是一种有前途的有机PCM,用于低温应用.
- 提高PCM的导热性和稳定性对于实际使用至关重要.
研究的目的:
- 通过使用酸和各种纳米粒子 (SiO2,TiO2,CuO,ZnO) 合成和描述新型复合PCM.
- 为了研究纳米颗粒纳入对劳里克酸的热性质和相变行为的影响.
- 评估这些复合PCM的长期热可靠性和适用于低温太阳能供热的适用性.
主要方法:
- 纳米粒子 (CuO,SiO2,TiO2,ZnO) 通过共同沉和sol-gel技术进行了合成.
- 纳米颗粒被分散到不同重量分数的化劳里酸中,以创建复合PCM.
- 差分扫描热量计 (DSC) 用于分析热性质 (相位过渡温度,潜热).
- 实验调查了热导率,比热,热可靠性 (循环测试) 和相变行为.
主要成果:
- 复合PCM表现出增强的导热性与增加的纳米粒子重量分数.
- 纳米颗粒的加入并没有显著改变相变温度,但影响了潜热.
- 复合PCM与纯劳里克酸相比,显示了更快的化和结时间.
- 热可靠性测试表明复合PCM的长期效用.
结论:
- 准备好的复合PCM,包括SiO2,TiO2,CuO和ZnO纳米粒子,显示热导率和相变动力学显著改善.
- 这些增强的热性能,加上证明的热可靠性,使复合PCM成为低温太阳能加热应用的有效材料.
- 该研究强调了纳米粒子增强的相变材料在高效的热能存储解决方案中的潜力.
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