首页> 外文学位 >An investigation of the coupled transport and reaction processes occurring within an oxygen generator wick reactor using lithium perchlorate as a chemical oxygen source.
【24h】

An investigation of the coupled transport and reaction processes occurring within an oxygen generator wick reactor using lithium perchlorate as a chemical oxygen source.

机译:研究使用高氯酸锂作为化学氧源的氧气发生器芯反应器中发生的耦合运输和反应过程。

获取原文
获取原文并翻译 | 示例

摘要

Chemical oxygen sources are popular with the aero/astrospace and mining communities because they can provide a great quantity of oxygen from a small package. Lithium perchlorate has the potential to be an excellent chemical oxygen source in a reactor which supplies oxygen at an adjustable rate. In order to avoid the use of moving parts in the reactor feed system, a capillary pumping scheme has been envisioned to move the molten salt from a relatively cool storage reservoir to a hot reaction zone within the porous medium where the liquid decomposes liberating oxygen. The oxygen flow control concept could include feedback control of the reaction zone temperature with a radiant heater. In order to develop such an oxygen generator reactor, the fundamental processes that control the bulk transport and reaction within the porous medium must be studied, defined and characterized. A lumped parameter model is proposed where the wick reactor tends to operate through a series of sequential processes at the pore level. This lumped formulation yields a parameter which enables construction of a distributed, finite-volume, steady-flow model of the wick reactor where there is complete coupling between the conservation equations. These models compare well to the data acquired through a series of experiments performed on a variety of sintered particle wicks. Qualitative predictions and conceptual arguments appear to capture the observable qualitative characteristics of the experimental reactors. The quantitative predictions yielded by the distributed model are good agreement with the measured output of a wick specifically designed and fabricated for high output. Simulation and experimentation results are summarized in a wick operating regime map.
机译:化学氧气源在航空/航天和采矿界很受欢迎,因为它们可以通过小包装提供大量氧气。高氯酸锂有潜力成为反应器中优良的化学氧源,该反应器以可调的速度提供氧气。为了避免在反应器进料系统中使用运动部件,已经设想了毛细管泵送方案,以将熔融盐从相对较冷的储存器移动到多孔介质内的热反应区,在该处液体分解释放出的氧气。氧气流量控制的概念可能包括使用辐射加热器对反应区温度进行反馈控制。为了开发这种氧气发生器反应器,必须研究,定义和表征控制多孔介质内的整体运输和反应的基本过程。提出了一个集总参数模型,在该模型中,芯子反应器倾向于通过一系列在孔隙水平上的顺序过程进行操作。这种集总公式产生了一个参数,该参数使得能够构造芯反应器的分布式有限体积稳态流模型,其中守恒方程之间完全耦合。这些模型与通过对各种烧结颗粒灯芯进行的一系列实验获得的数据进行了很好的比较。定性预测和概念性论证似乎捕获了实验反应堆的可观察到的定性特征。分布式模型得出的定量预测与为高输出量专门设计和制造的灯芯的输出量相吻合。仿真和实验结果总结在灯芯工作状态图中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号