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含油金刚石纳米制冷剂的核态池沸腾换热特性
Authors
丁国良
庄大伟
+3 more
彭浩
朱禹
胡海涛
Publication date
1 January 2011
Publisher
Abstract
研究了含油金刚石纳米制冷剂(即由制冷剂R113、润滑油VG68和金刚石纳米颗粒组成的纳米流体)的核态池沸腾换热特性,分析了金刚石纳米颗粒对含油制冷剂核态池沸腾换热的影响.实验中饱和压力为101.3 kPa;热流密度为10~80 kW/m2;纳米油(纳米颗粒和润滑油的混合物)的质量分数为0~5%;在纳米油中金刚石纳米颗粒的质量分数为0~15%.实验结果表明:金刚石纳米颗粒增强了含油制冷剂的池沸腾换热,在测试工况下换热系数最大可增加63.4%,并且增加幅度随纳米油中纳米颗粒质量分数的增加而增加,随纳米油质量分数的降低而增加.开发了含油纳米制冷剂池沸腾换热关联式,关联式预测值与94%的实验数据偏差在±20%以内
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 25/11/2020