...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Experimental study on capillary pumping performance of porous wicks for loop heat pipe
【24h】

Experimental study on capillary pumping performance of porous wicks for loop heat pipe

机译：循环热管用多孔芯吸毛细管性能的实验研究

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 aim of this study is to investigate the capillary pumping performance of porous wick for the use of loop heat pipe by developing a method that studying the capillary pumping amount real time changing curve which is recorded by electronic balance and computer. The porous wicks are prepared by powder metallurgy method using type 255 pure nickels as the material. The working fluids used in this study are water and acetone. The porous wicks investigated in this study include 3 with the same porosity and 4 with different porosities. The result shows that capillary pumping amount changing curve of porous wick can be described with an exponential increase equation. The offset and the opposite of amplitude of the exponential increase equation are all equated to the total capillary pumping amount of the porous wick. The time constant of the exponential increase equation is related to the capillary pumping rate which indicates the comprehensive properties of capillary pressure and flow resistance of the system of porous wick and working fluid. Capillary pumping rate is found to increase with the increasing porosities of the porous wicks. When porosities of the porous wicks are the same, those with tighter granules and straighter channels in the microstructures are found to have better capillary pumping performance.
机译：这项研究的目的是通过开发一种通过电子天平和计算机记录的研究毛细管抽吸量实时变化曲线的方法，来研究用于循环热管的多孔芯的毛细管抽吸性能。多孔灯芯是使用255型纯镍作为材料通过粉末冶金法制备的。本研究中使用的工作流体是水和丙酮。在这项研究中研究的多孔灯芯包括3个具有相同孔隙率和4个具有不同孔隙率。结果表明，可以用指数增加方程来描述多孔芯的毛细管泵送量变化曲线。指数增加方程的偏移量和振幅的相反值都等于多孔芯的总毛细管抽吸量。指数增加方程的时间常数与毛细泵的抽气速率有关，它表示毛细压力和多孔芯和工作流体系统的流动阻力的综合特性。发现毛细管抽吸率随着多孔芯的孔隙率的增加而增加。当多孔芯的孔隙率相同时，发现微结构中具有更紧密的颗粒和更直的通道的芯具有更好的毛细泵送性能。

著录项

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