铀氢锆动力堆燃料元件瞬发负温度系数分析

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Analysis of Prompt Negative Temperature Coefficient for UraniumZirconium Hydride Fuel Element in Power Reactor

National Key Laboratory of Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 分别计算了铀质量比、燃料棒半径、燃料温度、氢含量及毒物添加等对铀氢锆燃料元件瞬发负温度系数的影响,并对结果进行了分析。研究表明:随着铀质量比的增加,铀氢锆燃料堆芯的瞬发负温度系数的绝对值显著减小;添加毒物铒将大大增加铀氢锆堆芯的瞬发负温度系数的绝对值。
- 铀氢锆动力堆 /
- 燃料元件 /
- 瞬发负温度系数 /
- 铀质量比 /
- 毒物添加
Abstract: The effects of weight percentage of uranium, fuel rod radius, fuel temperature, hydrogen content and additional poison on prompt negative temperature coefficient for uranium zirconium hydride element are calculated respectively in this paper, and then the results are analyzed. The study shows that the absolute value of prompt negative temperature coefficient decreases observably along with the increasing of weight percentage of uranium. Additional poison erbium makes prompt negative temperature coefficient much more negative.
- Uranium zirconium hydride power reactor /
- Fuel element /
- Prompt negative temperature coefficient /
- Weight percentage of uranium /
- Additional poison