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HEAT TRANSFER ENHANCEMENT WITH Al_2O_3 NANOFLUID IN CONVECTIVE HEAT TRANSFER

机译:Al_2O_3纳米流体在对流换热中的传热强化

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摘要

Convective heat transfer characteristics of Al_2O_3 rianoparticles suspended in water are studied using different volume concentrations. An experimental facility was used to perform experiments at mass fluxes from 200 to 1000 kg/m~2-s, heat fluxes from 0.1 to 0.5 MW/m~2 and percentage Al_2O_3 volume fraction up to 1% at a pressure of 1 bar in an annular test section with an inner heating surface of hollow stainless steel. The addition of nanoparticles in water enhances heat transfer coefficient and the enhancement increases with increase in the nanoparticle concentration and flow rate.
机译:研究了不同体积浓度的悬浮在水中的Al_2O_3纳米颗粒的对流换热特性。在1 bar的压力下,使用实验装置在200至1000 kg / m〜2 s的质量通量,0.1至0.5 MW / m〜2的热通量和Al_2O_3体积百分数达1%的条件下进行实验。环形测试部分,内部加热表面为空心不锈钢。在水中添加纳米颗粒增强了热传递系数,并且随着纳米颗粒浓度和流速的增加而增强。

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