微重力条件下泡沫复合相变材料蓄热装置数值仿真

张靖驰; 盛强; 任维佳; 童铁峰

doi:10.11728/cjss2016.03.336

微重力条件下泡沫复合相变材料蓄热装置数值仿真

doi: 10.11728/cjss2016.03.336

1.
中国科学院空间应用工程与技术中心中国科学院太空应用重点实验室北京 100094
2.
中国科学院大学北京 100049

基金项目: 国家自然科学基金项目资助(50876004)

详细信息

作者简介:
张靖驰,E-mail:zhangjingchi@163.com

中图分类号: V527;TK02
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- 被引次数: 0
出版历程
- 收稿日期: 2015-01-22
- 修回日期: 2016-02-18
- 刊出日期: 2016-05-15

Numerical Simulation of Thermal Storage Device of Foam Composite Phase Change Material in Microgravity

1.
Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049

摘要

摘要: 相变材料由于相变过程中吸收或者释放大量能量且过程近似等温这一特性而有巨大的应用潜力,将相变材料蓄热装置应用于航天器是维持航天器内各个单元工作温度的一种有效方法.提出一种基于正二十烷的相变蓄热结构方案,分别填充泡沫铜与泡沫碳作为基体材料来强化相变材料的传热性能.通过对该模型进行数值仿真计算,得到相变蓄热装置温度、固液相界面位置随时间的变化等有效数据,分析泡沫相变蓄热材料在微重力条件下相变界面的演变过程.结果显示,得益于其较高的导热系数,泡沫复合相变材料可将热源热量有效分散到其他区域,减缓热源面温度上升速度,并且降低重力变化对传热的影响.所得数据结果为泡沫复合相变材料的工程应用提供了科学依据.
- 相变材料 /
- 泡沫碳 /
- 泡沫铜 /
- 数值仿真 /
- 微重力
Abstract: Phase Change Material (PCM) is particularly attractive due to its ability to provide high-energy storage density per unit mass in quasi-isothermal process.PCM Thermal Energy Storage (TES) device can effectively store thermal energy and maintain the temperature of electronic components in spacecraft.Two thermal energy storage devices filled with eicosane (C20) are presented.One is impregnated in carbon foams and the other is impregnated in copper foams.Numerical simulations of phase change process environment are performed by FLUENT software.The temperature distribution and solid-liquid phase interface changes are obtained.The results show that the temperature rising speed of heat source surface is reduced due to the high thermal conductive of Foam Composite Phase Change Material (FCPCM).FCPCM also could reduce the influence of gravity change on to thermal transfer.The results provide the scientific basis for the engineering application of FCPCM in microgravity.
- Phase change material /
- Carbon foam /
- Copper foam /
- Numerical simulation /
- Microgravity

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