• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Capillary performance of bi-porous sintered metal wicks
【24h】

Capillary performance of bi-porous sintered metal wicks

机译：双孔烧结金属芯的毛细管性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The capillary performance (K/R_(eff)) of the wick is a key design parameter for the thermal performance of heat pipes. In this study, the capillary performance of a bi-porous wick is investigated experimentally and analytically. The effects of particle size (40 ≤S d ≤ 600 μm) and cluster size (250 ≤ D ≤ 1440 μm) on the capillary performance are investigated. The capillary flows in the wicks are visualized using sintered glass powder wicks and a high speed camera. From the experiments, it is shown that the capillary performances of bi-porous wicks are significantly higher than those of mono-porous wicks. The capillary performance of 125/675 μm bi-porous wick is 11 times larger than that of a 125 μm mono-porous wick. In the bi-porous wick, three distinct capillary flow regimes are observed, depending on the ratio between particle and cluster sizes (d/D). A semi-analytic model for predicting the capillary performance of bi-porous wicks is developed for each regime. The model prediction shows excellent agreement with experimental results and indicates that the cluster size should be 4-6 times larger than the particle size for an optimal capillary performance. The effect of the contact angle on the capillary performance of bi-porous wicks is shown to be negligible.
机译：灯芯的毛细管性能（K / R_（eff））是热管热性能的关键设计参数。在这项研究中，通过实验和分析方法研究了双孔芯的毛细管性能。研究了粒径（40≤Sd≤600μm）和团簇尺寸（250≤D≤1440μm）对毛细管性能的影响。使用烧结的玻璃粉末吸液芯和高速摄像头可以看到吸液芯中的毛细流动。从实验中可以看出，双孔芯的毛细管性能明显高于单孔芯。 125/675μm双孔芯的毛细管性能是125μm单孔芯的11倍。在双孔芯中，根据颗粒尺寸和团簇尺寸之间的比率（d / D），观察到了三种不同的毛细管流动方式。针对每种情况，开发了一种用于预测双孔芯的毛细管性能的半分析模型。该模型预测显示出与实验结果极好的一致性，并表明簇的大小应为最佳毛细管性能的粒径的4-6倍。接触角对双孔芯的毛细管性能的影响显示为可忽略的。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第16期|p.4096-4103|共8页
  • 作者

    Chan Byon; Sung Jin Kim;

  • 作者单位

    School of Mechanical, Aerospace & Systems Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea;

    School of Mechanical, Aerospace & Systems Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bi-porous wick; capillary performance;

    机译：双孔灯芯毛细管性能;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号