Lightweight and high-performance air-cooled heat sinks
Lightweight and high-performance air-cooled heat sinks
复制标题
轻质高性能风冷散热器
DOI：
10.1109/semi-therm.2018.8357380
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
R. Bonner
中科院分区：
文献类型：
--
作者：
M. Shaeri;R. Bonner
电子设备的功率密度的快速增加导致了开发更轻的冷却系统以与当前使用的热管理解决方案相比耗散更大量的热的挑战。在主动冷却系统中，同时满足这两个要求需要采用有效的技术，而不是简单地增加流速，以避免更大尺寸的风扇/泵以及更大的压降/泵送功率。由于主动冷却系统的尺寸与泵送功率成比例，因此应在恒定的泵送功率下执行增强热传递，以不违反冷却系统的初始尺寸/重量。本文介绍了最近在开发轻质散热器以提高传热率而不增加泵浦功率方面的进展。所提出的散热器使用沿翅片的长度沿着等距插入的穿孔。实验进行了广泛的雷诺数从层流到湍流。结果进行了比较，一个普通的散热器没有穿孔。本文涵盖了我们最近几篇关于开发轻质高效散热器的出版物的主要发现。
Rapid increases in the power density of electronic devices have resulted in a challenge of developing lighter cooling systems to dissipate larger amounts of heat compared with currently used thermal management solutions. In an active cooling system, meeting these two requirements simultaneously requires adopting efficient techniques rather than simply increasing the flow rates, in order to avoid a larger-sized fan/pump, as well as a larger pressure drop/pumping power. Since the size of an active cooling system is proportional to the pumping power, enhancing heat transfer should be performed at a constant pumping power to not violate the initial size/weight of the cooling system. This paper describes recent advances in developing lightweight heat sinks for enhancing heat transfer rates without any penalty in pumping power. The proposed heat sinks use perforations that are inserted equidistantly along the length of the fins. The experiments were performed for a wide range of Reynolds numbers from laminar to turbulent flows. The results were compared with those of a regular heat sink without perforations. This paper covers key findings of our several recent publications about developing lightweight and efficient heat sinks.