H<sub>2</sub>O对空间站5A分子筛CO<sub>2</sub>去除性能影响

杨东升; 刘猛; 庞丽萍; 余青霓; 黄勇

doi:10.13700/j.bh.1001-5965.2014.0580

H₂O对空间站5A分子筛CO₂去除性能影响

doi: 10.13700/j.bh.1001-5965.2014.0580

1.
北京航空航天大学航空科学与工程学院, 北京 100191
2. 航天员科研训练中心人因工程国防科技重点实验室, 北京 100094

基金项目: 人因工程重点实验室开放基金(SYFD140051811K)

详细信息

作者简介:
杨东升(1986-),男,山东菏泽人,博士研究生,xingyewuhen@163.com

通讯作者:
余青霓(1971-),女,安徽黄山人,副研究员,yuqingni@139.com,主要研究方向为载人航天器舱室内大气净化技术.

中图分类号: V444.3⁺4
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出版历程
- 收稿日期: 2014-09-22
- 网络出版日期: 2015-08-20

H₂O impact on CO₂ removal performance of 5A molecular sieve in space station

1.
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. National Key Laboratory of Human Factors, China Astronaut Research and Training Center, Beijing 100094, China

摘要

摘要: 为进一步研究分子筛CO₂去除系统应用于空间站的工作可靠性和鲁棒性,针对空间站4床分子筛(4-BMS)系统中可能出现的湿度失效保护问题展开了实验研究.测试了两种载人航天分子筛材料TC-5A与PSA-5A,研究了不同相对湿度对CO₂吸附性能的影响;比较了相同湿度条件下,进口气体CO₂浓度、粒径及吸附温度的变化对分子筛吸附CO₂性能的影响,采用不同实验方法探究了H₂O和CO₂在两种分子筛材料中的竞争吸附关系.结果表明:PSA-5A吸附CO₂性能优于TC-5A,但对H₂O的吸附率略低于TC-5A.H₂O的存在对分子筛吸附CO₂影响非常大,空气中相对湿度达到60%时,分子筛基本失去了吸附CO₂的能力.此外,温度升高会造成CO₂的吸附量显著下降,但对H₂O的吸附量影响相对较小,尤其是当相对湿度较高时.这对中国未来长期运行的空间站分子筛CO₂去除系统工作有效性与工作鲁棒性的评价具有指导意义.
- 空间站 /
- 大气再生 /
- 5A分子筛 /
- H₂O /
- CO₂吸附性能
Abstract: For the further research on reliability and robustness of molecular sieve CO₂ removal system applied to the space station, the problem of the humidity failure protection of 4-bed molecular sieves (4-BMS) system in the space station was proposed and studied. The experiment was set up to test the impact of the CO₂ absorbing capacity under different relative humidity of gas in two kinds of molecular sieves (TC-5A and PSA-5A) for crewed space mission. Meanwhile, it compared the effect of CO₂ adsorption when CO₂ concentration of inlet gas, particles and temperature changed under the definite humidity, and explored the competitive adsorption between CO₂ and H₂O in TC-5A and PSA-5A using different measures. Results show that the PSA-5A has a better performance on CO₂ adsorption, but slightly less than TC-5A on H₂O adsorption capacity. And presence of H₂O in the air had a great influence on molecular sieve adsorption of CO₂, when the relative humidity reached the 60%, the molecular sieve has basically lose the CO₂ adsorption capacity. Besides, the TC-5A and the PSA-5A CO₂ adsorption capacity drop significantly when the temperature rises, but has a relatively less impact on H₂O adsorption, especially when RH is high. The experimental study can play a guiding role in evaluation of system reliability and robustness for the long-term orbiting space station study.
- space station /
- atmosphere revitalization /
- 5A molecular sieve /
- H₂O /
- CO₂ adsorbing performance

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