不凝气体对环路热管工作性能的不利影响

何江; 林贵平; 柏立战; 苗建印; 张红星

doi:10.13224/j.cnki.jasp.2014.10.014

不凝气体对环路热管工作性能的不利影响

doi: 10.13224/j.cnki.jasp.2014.10.014

1. 北京航空航天大学航空科学与工程学院人机工效与环境控制实验室, 北京 100191;
2. 中国空间技术研究院北京空间飞行器总体设计部空间热控技术北京市重点实验室, 北京 100094

基金项目:

中央高校基本科研业务费专项资金（50100002013105020）

详细信息

作者简介:
何江（1985- ），男，陕西兴平人，博士生，主要从事热管、环路热管、热虹吸环路热性能方面的研究.

中图分类号: V231;TB131
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出版历程
- 收稿日期: 2013-07-02
- 刊出日期: 2014-10-28

Adverse effect of non-condensable gas on the operating performance of loop heat pipe

1. Laboratory of Fundamental Science on Ergonomics and Environment Control, School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Beijing Key Laboratory of Space Thermal Control Technology, Beijing Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, China

摘要

摘要: 通过向环路热管内充装定量氮气来模拟实际不凝气体的生成，考察了不同不凝气体含量、热载荷和热沉温度条件下，环路热管工作性能的变化.结果显示不凝气体对工作性能造成的不利影响体现在：取决于热载荷和热沉温度，可导致稳态工作温度升高2~10℃；在小于60W的热载荷区间或者-5℃的热沉温度条件下，不凝气体导致的不利影响更加显著；改变控温性能，产生一个故障热载荷区间；启动时间、启动温度、启动温升增大；引发温度波动现象和系统运行失效.基于特征点温度的变化特性，分析并讨论了不凝气体影响环路热管工作性能的物理机理.
- 环路热管 /
- 不凝气体 /
- 工作温度 /
- 控温性能 /
- 启动 /
- 温度波动 /
- 失效
Abstract: Nitrogen was injected into the loop heat pipe(LHP) as non-condensable gas(NCG), and the operating performance of the LHP with NCG was studied for different NCG inventories, while heat loads were applied to the evaporator and heat sink temperatures. Under the adverse effects of NCG: the operating temperature of the evaporator was elevated by 2-10℃ depending on the heat load and heat sink temperature; such effect was notable for a smaller heat load(less than 60W) or at lower heat sink temperature(-5℃); the temperature controlling performance varied, leading to a corresponding failure range for the heat load; the startup temperature and super tup overshooting increased, and the startup time was prolonged; the temperature oscillation phenomenon and operating failure could be triggered. According to the temperature variations of the characteristic points along the loop, the physical mechanism of the effect of NCG on the operating performance was analyzed and discussed.
- loop heat pipe /
- non-condensable gas /
- operating temperature /
- temperature controlling performance /
- startup /
- temperature oscillation /
- failure

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参考文献(21)

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