Performance of a passive heat sink using stearic acid based composite as phase change material

被引：0
|
作者：
Zhao L. [1 ]
Xing Y. [1 ]
Liu X. [1 ]
Luo Y. [1 ]
Rui Z. [1 ]
机构：
[1] School of Aeronautic Science and Engineering, Beihang University, Beijing
来源：
Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2019年 / 45卷 / 05期
关键词：
Copper foam; Passive heat sink; Phase change material; Stearic acid; Thermal management; Two temperature energy equation;
D O I：
10.13700/j.bh.1001-5965.2018.0513
中图分类号：
学科分类号：
摘要：
The phase change material based passive heat sink is widely applied in the fields of aerospace and military equipment. To address the thermal management of electronic chip with high heat flux, the single temperature energy equation and the two temperature energy equation were applied to simulate the thermal management performance of the copper foam/stearic acid based heat sink, and their accuracy were validated by the lab-scale experiment. By combining with the thermal properties of grapheme nanoplatelets/stearic acid composite phase change material established by EMT based on Maxwell-Garnett model, the influence of different composition of thermal conductivity enhancement on the thermal performance of the heat sink was investigated. And the effect of the ambient temperature was studied. The results show that the two temperature energy equations can simulate more accurately when the heat flux of the chip is higher. When the volume fraction of the thermal conductivity enhancer is fixed, increasing pore density of copper foam has few improvement on the thermal management performance, while copper foam with GnP can effectively improve the thermal management performance of the heat sink. The serious change of ambient temperature can play an important role in the managed temperature and temperature control time. © 2019, Editorial Board of JBUAA. All right reserved.
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页码：970 / 979
页数：9
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