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Thermophysical Behavior of Cryogenically Treated Silicon Carbide for Nanofluids

机译：深冷处理的碳化硅对纳米流体的热物理行为

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摘要

This paper deals with the influence of deep cryogenic treatment on thermophysical characteristics of silicon carbide powder for nanofluids for heat exchange applications. X-ray diffraction and scanning election microscope analysis were done with ball milled nano-SiC and cryo-SiC powders compared to conventional SiC powders. The experimental investigations on heat gain, viscosity and stability were also carried out in SiC-water and (cryogenically treated silicon carbide) cryo-SiC-water nanofluids. The results show that the deep cryogenic treatment decreases the size of the silicon carbide ball milled powder when compared to the conventional ball milled SiC powder. The SiC/water nanofluid with a pH value of 10.5 shows good stability when compared to the Sic/water nanofluid at pH 6.5. It is also found that (cryogenically treated silicon carbide) cryo-SiC-water nanofluid provides higher heat transfer than conventional SiC-water nanofluid.
机译：本文探讨了深低温处理对用于热交换应用的纳米流体的碳化硅粉末热物理特性的影响。与传统的SiC粉末相比，球磨的纳米SiC和低温SiC粉末进行了X射线衍射和扫描电子显微镜分析。还对SiC-水和（低温处理的碳化硅）cryo-SiC-水纳米流体中的热增益，粘度和稳定性进行了实验研究。结果表明，与常规的球磨SiC粉相比，深低温处理减小了碳化硅球磨粉的尺寸。与pH值为6.5的Sic /水纳米流体相比，pH为10.5的SiC /水纳米流体表现出良好的稳定性。还发现（低温处理的碳化硅）低温-SiC-水纳米流体比常规的SiC-水纳米流体提供更高的热传递。

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