优化的纳米流体冷却剂提高了汽车散热器的热性能
Ferdinard Dika Oshionebo1, Doga Kavaz2, Dilber Uzun Ozsahin3,4,5
1Energy Systems Engineering Department, Cyprus International University, Haspolat-Lefkosa, Mersin 10, Turkey.
Scientific reports
|December 12, 2025
概括
三级混合纳米流体显著提高了散热器冷却性能. 最佳配方可将发动机出口温度降低高达44.6%,尽管较高度略有降低了整体效率.
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.
- 汽车工程 汽车工程
背景情况:
- 传统的汽车冷却剂在传热效率方面存在局限性.
- 纳米流体,特别是混合和三元组合,显示了增强热性能的潜力.
- 粒子特性和体积分数显著影响纳米流体的特性.
研究的目的:
- 通过使用各种三元混合纳米流体,以数值方式研究一台翅散热器的热性能.
- 评估不同纳米粒子组合 (例如Fe/Cu/Ag,Fe/Cu/ZnO,Ag/Al2O3/TiO2) 和体积分数的影响.
- 为了确定最佳的纳米流体组成,以获得最大的冷却效率.
主要方法:
- 热传输的数值模拟在一个卷式散热器.
- 使用了三元混合纳米流体与纳米粒子,如ZnO,Al2O3,TiO2,MWCNTs,石墨烯,Fe,Cu和Ag.
- 分析的参数包括努塞尔特数,传热系数和出口冷却液温度.
主要成果:
- 特定的三元混合纳米流体 (Fe/Cu/Ag,Fe/Cu/ZnO,Ag/Al2O3/TiO2) 增强了对流传热传递.
- 增加的纳米粒子体积分数导致出口冷却液温度降低,其中一种最佳液体实现了44.6%的下降.
- 在测试的纳米流体中,性能指数下降了5.8-11.7%,非金属氧化物显示最小的减少.
结论:
- 三级混合纳米流体在提高散热器冷却效率方面是有效的.
- 纳米颗粒度和热传递之间的最佳平衡至关重要.
- 需要进一步研究更高体积分数的效率权衡.
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