建模月球上生产氧气的能源需求
Dorian Leger1,2, Fardin Ghaffari-Tabrizi1, Matthew Shaw3
1Spaceship, European Astronaut Center, Exploration Preparation, Research and Technology Team (ExPeRT), Directorate of Human and Robotic Exploration, European Space Agency, Cologne 51147, Germany.
概括
从月球规格岩中生产氧气需要大量的能量,其中降解和电解是最苛刻的步骤. 优化受益是未来任务有效提取月球氧气的关键.
科学领域:
- 在现场资源利用 (ISRU)
- 行星科学 行星科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 航天器的推进很大程度上依赖于氧气,因此需要长期任务的可持续来源.
- 月球的 regolith 含有像ilmenite (FeTiO3) 这样的矿物质,这是提取氧气的潜在来源.
- 目前对于月球氧气生产的能源需求还不清楚,这阻碍了任务规划.
研究的目的:
- 开发和介绍月球氧气生产的能源消耗模型.
- 分析一个端到端的过程链的能量需求,用于从月球岩石中提取氧气.
- 确定影响月球氧气生产中的能源效率的关键参数.
主要方法:
- 通过在月球 regolith中减少ilmenite (FeTiO3) 的气生产进行模拟的氧气生产.
- 包括的工艺步骤:挖掘,运输,受益,减少,水电解,液化和储存.
- 根据可调节的参数,计算出每公斤生产的液态氧的能量需求.
主要成果:
- 预计每公斤液体氧气的能量需求为24.3 (±5.8) 千瓦时,用于10%的伊尔梅尼特原料.
- 证实了减少和水电解是最耗能的阶段.
- 灵敏度分析确定了受益丰富系数作为最关键的优化参数.
结论:
- 开发的模型提供了一个参数化的框架,用于评估月球氧气生产中的能源消耗.
- 从月球规石中有效提取氧气是可行的,但需要仔细规划能源基础设施.
- 优化受益过程对于最大限度地减少月球ISRU氧气生产的整体能源足迹至关重要.
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