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首页> 外文期刊>Energy >Experimental investigation of convective heat transfer augmentation for car radiator using ZnO-water nanofluids
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Experimental investigation of convective heat transfer augmentation for car radiator using ZnO-water nanofluids

机译：ZnO-水纳米流体对流汽车散热器对流换热的实验研究

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摘要

New experimental data are reported for water based nanofluids to enhance the heat transfer performance of a car radiator. ZnO nanoparticles have been added into base fluid in different volumetric concentrations (0.01%, 0.08%, 0.2% and 0.3%). The effect of these volumetric concentrations on the heat transfer performance for car radiator is determined experimentally. Fluid flow rate has been varied in a range of 7-11 LPM (liter per minute) (corresponding Reynolds number range was 17,500-27,600). Nanofluids showed heat transfer enhancement compared to the base fluid for all concentrations tested. The best heat transfer enhancement up to 46% was found compared to base fluid at 0.2% volumetric concentration. A further increase in volumetric concentration to 0.3% has shown a decrease in heat transfer enhancement compared to 0.2% volumetric concentration. Fluid inlet temperature was kept in a range of 45-55 degrees C. An increase in fluid inlet temperature from 45 degrees C to 55 degrees C showed increase in heat transfer rate up to 4%. (C) 2015 Elsevier Ltd. All rights reserved.
机译：据报道，有关水基纳米流体的新实验数据可增强汽车散热器的传热性能。 ZnO纳米颗粒已以不同的体积浓度（0.01％，0.08％，0.2％和0.3％）添加到基础液中。这些体积浓度对汽车散热器传热性能的影响是通过实验确定的。流体流速在7-11 LPM（升/分钟）的范围内变化（相应的雷诺数范围为17,500-27,600）。在所有测试浓度下，与基础流体相比，纳米流体均显示出传热增强。与体积浓度为0.2％的基础流体相比，传热增强效果最佳，达到46％。与0.2％的体积浓度相比，体积浓度的进一步增加至0.3％已显示出传热增强的降低。流体入口温度保持在45-55摄氏度的范围内。流体入口温度从45摄氏度增加到55摄氏度，表明传热率提高了4％。 （C）2015 Elsevier Ltd.保留所有权利。

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