| 载人航天器SPE制氧系统性能分析 |
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| 引用本文： | 任建勋,张信荣,尚传勋,周抗寒,梁新刚.载人航天器SPE制氧系统性能分析[J].清华大学学报(自然科学版),2002,42(8):1102-1105. |
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| 作者姓名： | 任建勋 张信荣 尚传勋 周抗寒 梁新刚 |
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| 作者单位： | 1. 清华大学,工程力学系,北京,100084
2. 航天医学工程研究所,北京,100094 |
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| 基金项目： | 国家“八六三”高技术项目 (863 -2 -2 -3 -3 ) |
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| 摘 要： | 为了对载人航天器中 SPE制氧系统进行优化改进 ,根据热力学守恒定律、能量输运规律以及相关电化学理论 ,建立了系统工作过程的数学模型 ,通过数值模拟方法对系统进行了性能分析。结果表明 ,提高电解槽工作电流密度 ,不仅有利于提高电流效率和氧产量 ,也有利于减小单位产氧量的电耗 ;而提高氧、氢产品背压会对系统工作产生不利影响 ,产氧量下降 ,且单位产氧量的电耗升高 ;工作温度的提高 ,既有正面影响 ,如理论分解电压下降 ,单耗减小 ,也有负面影响 ,如造成电流效率降低 ,产氧量下降。研究结果对载人航天器中水电解制氧系统的设计及运行有一定指导意义。
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| 关 键 词： | 载人航天器 制氧 电解 传热 |
| 文章编号： | 1000-0054(2002)08-1102-04 |
| 修稿时间： | 2001年8月16日 |
Performance analysis of SPE oxygen generation system in manned spacecraft |
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| REN Jianxun,ZHANG Xinrong,SHANG Chuanxun,ZHOU Kanghan,LIANG Xingang.Performance analysis of SPE oxygen generation system in manned spacecraft[J].Journal of Tsinghua University(Science and Technology),2002,42(8):1102-1105. |
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| Authors: | REN Jianxun ZHANG Xinrong SHANG Chuanxun ZHOU Kanghan LIANG Xingang |
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| Institution: | REN Jianxun~1,ZHANG Xinrong~1,SHANG Chuanxun~2,ZHOU Kanghan~2,LIANG Xingang~1 |
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| Abstract: | A mathematical model including thermodynamics, energy transport and electrochemistry was used to optimize the SPE oxygen generation system in a manned spacecraft. The results show an increased current density not only increase the current efficiency and the oxygen yield, but also reduces the per oxygen power consumption. An increased oxygen and hydrogen back pressure causes problems, such as increased power consumption and reduced oxygen yield. Increasing the working temperature of the electrolytic cell reduces the theoretical decomposition voltage; however, the oxygen generation is also reduced resulting in increased power consumption. |
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| Keywords: | manned spacecraft oxygen generation electrolyzation heat transfer |
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