纳米流体用于先进应用:对制备方法,性能和环境影响的全面审查
Izzat Razzaq1, Wang Xinhua1, Ghulam Rasool2
1College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
ACS omega
|February 24, 2025
概括
纳米流体在各种工程应用中显著提高了传热性能. 精心控制纳米粒子属性是优化效率和最大限度地减少能源消耗的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 流体力学 流体力学 流体力学
背景情况:
- 纳米流体是先进的传热流体,具有卓越的热物理性能.
- 纳米粒子集成提高了导热性和传热性能.
- 应用包括换热器,电子冷却和可再生能源系统.
研究的目的:
- 审查纳米粒子集成对纳米流体特性的影响.
- 讨论影响纳米流体热传递的机制.
- 探索应用,挑战和未来的研究方向.
主要方法:
- 关于纳米流体研究的文献综述.
- 对热物理性质变化的分析 (导热率,粘度).
- 讨论热传递机制和经验数据.
主要成果:
- 纳米粒子集成可以提高导热率和对流传热传递系数 (高达123%).
- 混合纳米流体显示了增强的导热性.
- 增加粘度是一个需要优化的权衡.
结论:
- 纳米流体为能源效率和系统小型化提供了显著的潜力.
- 仔细的纳米粒子属性控制对于最佳性能至关重要.
- 需要对混合纳米流体,相变材料和可持续纳米材料进行进一步研究.
相关概念视频
01:31Characteristics of Fluids
234
Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
234
01:27Types of Fluids
160
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
160