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Heat transport in nanofluid coolant car radiator with louvered fins
Powder Technology ( IF 5.2 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.powtec.2020.08.047
Ashutosh Kumar , M.A. Hassan , Prabha Chand

Abstract Heat transport capacity of conventional coolants for car radiators can be enhanced by adding nano size metal oxide particles. This paper presents a three-dimensional thermo-fluid analysis of real size car radiator with louvered fins and nanofluid based coolants. The base coolant consisting of 60% Ethylene glycol and 40% Water is dispersed with Aluminum oxide, Copper oxide and Zinc oxide nanoparticles. Effects of nanoparticle concentration and flow velocity on heat transfer have been reported. Dependence of thermophysical properties on nanoparticle concentration has also been evaluated. The heat transfer coefficient for coolant was increased by 42.5%, 47.4% and 51.1% on addition of 2% of Aluminum oxide, Zinc oxide and Copper oxide respectively. A Significant linear increase in heat transfer coefficient and Nusselt number was observed with rise in flow Reynolds number. Copper oxide nanoparticles based coolants are found to be more effective. A set of simplified correlations for the Nusselt number is presented.

中文翻译:

带百叶窗翅片的纳米流体冷却剂汽车散热器中的热传输

摘要 通过添加纳米级金属氧化物颗粒可以提高汽车散热器常规冷却剂的传热能力。本文介绍了具有百叶窗式散热片和基于纳米流体的冷却剂的真实尺寸汽车散热器的三维热流体分析。由 60% 乙二醇和 40% 水组成的基础冷却液分散有氧化铝、氧化铜和氧化锌纳米颗粒。已经报道了纳米颗粒浓度和流速对传热的影响。还评估了热物理特性对纳米颗粒浓度的依赖性。添加2%的氧化铝、氧化锌和氧化铜后,冷却剂的传热系数分别提高了42.5%、47.4%和51.1%。随着流动雷诺数的增加,观察到传热系数和努塞尔数的显着线性增加。发现基于氧化铜纳米颗粒的冷却剂更有效。提供了一组 Nusselt 数的简化相关性。
更新日期:2020-10-01
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