水池沸热传递特征的疏水改性TiO2@碳纳米管复合纳米流体
Yongli Wu1, Zhongmin Lang1, Gangqiang Wu1
1College of Chemical Engineering, Ordos Institute of Technology, Ordos 017000, China.
Nanomaterials (Basel, Switzerland)
|February 12, 2026
概括
使用疏水性二氧化 (TiO2) 和多壁碳纳米管 (MWCNTs) 的新复合纳米流体显著改善了传热. 这项研究为沸应用提供了增强的传热系数和临界热量流.
科学领域:
- 材料科学 材料科学 材料科学
- 热传递工程 热传递工程
- 纳米技术 纳米技术
背景情况:
- 传统的工作流体面临诸如高初始沸超热和低传热系数等挑战.
- 纳米流体提供了潜在的解决方案,但优化它们的性能以提高沸热传递仍然是一个活跃的研究领域.
研究的目的:
- 制造和研究防水修饰的TiO2@碳纳米管 (MWCNT) 复合纳米流体.
- 系统地研究和视觉验证这些新型纳米流体的沸传热机制.
- 评估TiO2和MWCNTs对传热性能的协同效应.
主要方法:
- 制造受性修饰的TiO2@MWCNT复合纳米流体.
- 系统地调查和视觉验证沸热传递机制.
- 在不同的质量比下进行性能评估,重点关注TiO2与MWCNT的最佳2:1比.
主要成果:
- 疏水性TiO2纳米流体显示出增强的稳定性.
- 疏水性TiO2@MWCNTs复合纳米流体表现出更好的导热性.
- 最佳的2:1比率实现了31.6%的热传递系数 (HTC) 和46.5%的临界热流 (CHF) 的增加,与单独使用TiO2纳米流体相比.
- 复合纳米流体通过增加蒸发核心密度和降低核化能量障碍,有效地降低了初始沸超热.
结论:
- 防水改性TiO2@MWCNTs复合纳米流体在水池沸中表现出优异的传热性能.
- TiO2和MWCNT之间的协同效应同时增强了HTC和CHF.
- 这些复合纳米流体显示出强化池沸热传递应用的巨大潜力.
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