一种基于基液体金属电毛细体效应的增强热传递方法
Liyu Dai1, Xiaomin Wu1, Yiqing Guo1
1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China. wuxiaomin@mail.tsinghua.edu.cn.
Lab on a chip
|November 21, 2024
概括
这项研究引入了一种用于微流体冷却的新型电毛细管热交换方法. 使用-合金滴滴,它可提高高达110%的散热,提供更简单,更具成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
- 热传递热量转移的方法
背景情况:
- 电子产品中功率密度的增加需要先进的散热解决方案.
- 目前的微流体冷却在制造,维护和成本方面面临挑战.
- 有效的热交换对于紧型电子设备的可靠运行至关重要.
研究的目的:
- 提出一种简单有效的微流体热交换方法.
- 克服现有的微流体冷却技术的局限性.
- 通过电毛细管效应,增强微流体系统中的热传递.
主要方法:
- 作为核心传热单元,采用优性合金滴滴.
- 使用电场来诱导电毛细管流和滴滴振荡.
- 在交流电场下调查温度分布和流量特征.
- 分析电压,频率和滴滴数量对传热的影响.
主要成果:
- 电毛细管效应驱动流体流动,增强从导向到对流的热传输.
- 滴滴振荡加剧了流体干扰,进一步改善了散热.
- 热量流量增加了高达110%,与仅传导相比,有两个滴.
- 发现电压,频率和滴滴数量显著影响热传递增强.
结论:
- 拟议的电毛细管方法可显著改善微流体传热.
- 这种技术为紧的电子系统中有效散热提供了可行的解决方案.
- 这项研究表明了微流体冷却的简单,可控制和潜在的成本效益的方法.
相关概念视频
01:14Mechanisms of Heat Transfer I
4.2K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.2K
01:20Mechanisms of Heat Transfer II
3.2K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.2K