| タイトル | Online Oxide Contamination Measurement and Purification Demonstration |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110022666 |
| 著者（英） | Polzin, K. A.; Childers, D. J.; Bradley, D. E.; Garber, A. E.; Webster, K. L.; Godfroy, T. J. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2011-10-01 |
| 言語 | eng |
| 内容記述 | Liquid metal sodium-potassium (NaK) has advantageous thermodynamic properties indicating its use as a fission reactor coolant for a surface (lunar, martian) power system. A major area of concern for fission reactor cooling systems is system corrosion due to oxygen contaminants at the high operating temperatures experienced. A small-scale, approximately 4-L capacity, simulated fission reactor cooling system employing NaK as a coolant was fabricated and tested with the goal of demonstrating a noninvasive oxygen detection and purification system. In order to generate prototypical conditions in the simulated cooling system, several system components were designed, fabricated, and tested. These major components were a fully-sealed, magnetically-coupled mechanical NaK pump, a graphite element heated reservoir, a plugging indicator system, and a cold trap. All system components were successfully demonstrated at a maximum system flow rate of approximately 150 cc/s at temperatures up to 550 C. Coolant purification was accomplished using a cold trap before and after plugging operations which showed a relative reduction in oxygen content. |
| NASA分類 | Spacecraft Propulsion and Power |
| レポートNO | NASA/TP-2011-216473
M-1322 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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