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Assessment of heat transfer characteristics and system physiognomies using hybrid nanofluids in an automotive radiator
Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2020-03-04 , DOI: 10.1016/j.cep.2020.107886
Senthil Ramalingam , Ratchagaraja Dhairiyasamy , Mohan Govindasamy

Innovative heat elimination technologies from the radiator are needed for weight reduction in an automotive vehicle to increase the overall performance. The fluids used nowadays are based on a combination of distilled water (DW) and ethylene glycol (EG), and also using nanofluids for improving heat transfer performance has been increased within the last couple of years. The use of aluminum oxide (Al2O3) doped with unmilled silicon carbide (SiCUM) nanoparticles and milled Silicon carbide (SiCM) nanoparticles dispersed in DW and EG at 50:50 volumetric proportions experimented in this work. The focus for the important characterization of the nf which includes thermophysical properties is elaborated in this paper. The outcomes showed an optimum improvement regarding the overall thermal performance of 28.34 % making use of Al2O3 doped with milled Silicon carbide(SiCM) at a volume concentration of 0.8 %. This might be due to the size reduction of SiC nanoparticles by the milling process involved in this experiment.



中文翻译:

在汽车散热器中使用混合纳米流体评估传热特性和系统外形

为了减轻汽车的重量以提高整体性能,需要采用散热器的创新散热技术。如今使用的流体是基于蒸馏水(DW)和乙二醇(EG)的组合,并且在过去的几年中,使用纳米流体改善传热性能的趋势也有所增加。未研磨的碳化硅(SiC UM)纳米粒子和研磨的碳化硅(SiC M)掺杂的氧化铝(Al 2 O 3)的使用。)以这项工作进行了实验,以50:50的体积比分散在DW和EG中的纳米颗粒。本文阐述了包括热物理性质在内的nf重要表征的重点。结果表明,使用掺杂有0.8%体积浓度的碾磨的碳化硅(SiC M)的Al 2 O 3,可以使整体热性能达到28.34%的最佳改善。这可能是由于该实验涉及的研磨过程使SiC纳米颗粒尺寸减小。

更新日期:2020-03-04
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