关于纳米流体的审查:制备,性能,稳定性和热性能在传热应用中的增强
Md Atiqur Rahman1,2, S M Mozammil Hasnain3, Shatrudhan Pandey4
1Department of Mechanical Engineering, Birla Institute of Technology, Mesra, Ranchi, 835215, India.
ACS omega
|August 5, 2024
概括
纳米粒子通过改善纳米流体的热特性来提高换热器的效率. 优化纳米粒子度,大小和形状是最大化传热和管理压力损失的关键.
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:
- 纳米流体是纳米颗粒在基础流体中的悬浮物,与传统流体相比,它们具有优越的热和质性能.
- 这些增强的特性对于提高热交换器和其他热系统的效率至关重要.
- 了解纳米粒子特征的影响对于优化纳米流体性能至关重要.
研究的目的:
- 研究纳米粒子特征 (度,大小,形状) 对纳米流体热和质性质的影响.
- 探索这些特性如何影响换热器中的传热效率和压力下降.
- 审查增强纳米流体稳定性的方法及其在实际应用中的作用.
主要方法:
- 审查现有的研究纳米流体的特性和热传输.
- 对纳米粒子类型 (例如MgO,TiO2,ZnO) 的分析及其导热性增强.
- 讨论稳定性增强技术 (表面活性剂,超声波混合,pH控制).
主要成果:
- 金属氧化物纳米粒子可以提高高达30%的传热效率.
- 纳米粒子的大小和形状显著影响热导率,粘度和密度.
- 最佳的纳米颗粒度可以增强热传递,但过量可以降低效率,因为粘度增加和布朗运动减少.
结论:
- 纳米流体是一个可行的解决方案,用于提高传热设备的热性能.
- 仔细控制纳米粒子的特性和度对于最大限度地提高效率至关重要.
- 本综述是纳米流体在传热中的应用的基础资源.
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